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203561488040 = 23523983225089
BaseRepresentation
bin1011110110010100110…
…1011100111010101000
3201110102112212000121212
42331211031130322220
511313343220104130
6233303113052252
720464305046031
oct2754515347250
9643375760555
10203561488040
117936a175949
12335503b7088
1316271136b51
149bd10c7a88
155465e79e95
hex2f6535cea8

203561488040 has 64 divisors (see below), whose sum is σ = 478415289600. Its totient is φ = 77804818432.

The previous prime is 203561488027. The next prime is 203561488049. The reversal of 203561488040 is 40884165302.

It is not an unprimeable number, because it can be changed into a prime (203561488049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 791816 + ... + 1016904.

It is an arithmetic number, because the mean of its divisors is an integer number (7475238900).

Almost surely, 2203561488040 is an apocalyptic number.

203561488040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203561488040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239207644800).

203561488040 is an abundant number, since it is smaller than the sum of its proper divisors (274853801560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203561488040 is a wasteful number, since it uses less digits than its factorization.

203561488040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226106 (or 226102 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 203561488040 in words is "two hundred three billion, five hundred sixty-one million, four hundred eighty-eight thousand, forty".

Divisors: 1 2 4 5 8 10 20 23 40 46 92 115 184 230 460 920 983 1966 3932 4915 7864 9830 19660 22609 39320 45218 90436 113045 180872 225089 226090 450178 452180 900356 904360 1125445 1800712 2250890 4501780 5177047 9003560 10354094 20708188 25885235 41416376 51770470 103540940 207081880 221262487 442524974 885049948 1106312435 1770099896 2212624870 4425249740 5089037201 8850499480 10178074402 20356148804 25445186005 40712297608 50890372010 101780744020 203561488040