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84953020 = 22531731877
BaseRepresentation
bin1010001000001…
…00011110111100
312220212001122011
411010010132330
5133221444040
612232501004
72051042305
oct504043674
9186761564
1084953020
1143a54509
122454a764
13147a5979
14b3d57ac
1576d13ea
hex51047bc

84953020 has 48 divisors (see below), whose sum is σ = 186778368. Its totient is φ = 32417280.

The previous prime is 84952997. The next prime is 84953021. The reversal of 84953020 is 2035948.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84953021) 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, 44322 + ... + 46198.

It is an arithmetic number, because the mean of its divisors is an integer number (3891216).

Almost surely, 284953020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84953020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93389184).

84953020 is an abundant number, since it is smaller than the sum of its proper divisors (101825348).

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

84953020 is a wasteful number, since it uses less digits than its factorization.

84953020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1988 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 84953020 is about 9216.9962569158. The cubic root of 84953020 is about 439.6019471664.

Adding to 84953020 its reverse (2035948), we get a palindrome (86988968).

The spelling of 84953020 in words is "eighty-four million, nine hundred fifty-three thousand, twenty".

Divisors: 1 2 4 5 10 20 31 62 73 124 146 155 292 310 365 620 730 1460 1877 2263 3754 4526 7508 9052 9385 11315 18770 22630 37540 45260 58187 116374 137021 232748 274042 290935 548084 581870 685105 1163740 1370210 2740420 4247651 8495302 16990604 21238255 42476510 84953020