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23031738744 = 2337197215457
BaseRepresentation
bin10101011100110011…
…000111000101111000
32012110010021112221220
4111130303013011320
5334132111114434
614325230032040
71443514356240
oct253463070570
965403245856
1023031738744
1198498a8233
124569348620
1322308226a1
141186bd0b20
158ebecdd49
hex55ccc7178

23031738744 has 64 divisors (see below), whose sum is σ = 69268396800. Its totient is φ = 6234153984.

The previous prime is 23031738731. The next prime is 23031738749. The reversal of 23031738744 is 44783713032.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 23031738696 and 23031738705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031738749) 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, 3604537 + ... + 3610920.

It is an arithmetic number, because the mean of its divisors is an integer number (1082318700).

Almost surely, 223031738744 is an apocalyptic number.

23031738744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23031738744 is an abundant number, since it is smaller than the sum of its proper divisors (46236658056).

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

23031738744 is a wasteful number, since it uses less digits than its factorization.

23031738744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7215492 (or 7215488 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 42.

The spelling of 23031738744 in words is "twenty-three billion, thirty-one million, seven hundred thirty-eight thousand, seven hundred forty-four".

Divisors: 1 2 3 4 6 7 8 12 14 19 21 24 28 38 42 56 57 76 84 114 133 152 168 228 266 399 456 532 798 1064 1596 3192 7215457 14430914 21646371 28861828 43292742 50508199 57723656 86585484 101016398 137093683 151524597 173170968 202032796 274187366 303049194 404065592 411281049 548374732 606098388 822562098 959655781 1096749464 1212196776 1645124196 1919311562 2878967343 3290248392 3838623124 5757934686 7677246248 11515869372 23031738744