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10230512640 = 21035798431
BaseRepresentation
bin10011000011100100…
…10011110000000000
3222101222111220000120
421201302103300000
5131423002401030
64411055220240
7511343631315
oct114162236000
928358456016
1010230512640
11437a948627
121b96217680
13c70698b9a
146d0a08d0c
153ed243010
hex261c93c00

10230512640 has 176 divisors, whose sum is σ = 33139783680. Its totient is φ = 2693283840.

The previous prime is 10230512597. The next prime is 10230512641. The reversal of 10230512640 is 4621503201.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 10230512640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10230512641) 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, 1209225 + ... + 1217655.

Almost surely, 210230512640 is an apocalyptic number.

10230512640 is a gapful number since it is divisible by the number (10) 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 10230512640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16569891840).

10230512640 is an abundant number, since it is smaller than the sum of its proper divisors (22909271040).

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

10230512640 is an equidigital number, since it uses as much as digits as its factorization.

10230512640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8538 (or 8520 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 10230512640 in words is "ten billion, two hundred thirty million, five hundred twelve thousand, six hundred forty".