923985720 has 192 divisors, whose sum is σ = 3512171520. Its totient is φ = 206260992.

The previous prime is 923985709. The next prime is 923985743. The reversal of 923985720 is 27589329.

It is a super-2 number, since 2×923985720² = 1707499221527836800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104097 + ... + 112623.

It is an arithmetic number, because the mean of its divisors is an integer number (18292560).

Almost surely, 2^923985720 is an apocalyptic number.

923985720 is a gapful number since it is divisible by the number (90) 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 923985720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1756085760).

923985720 is an abundant number, since it is smaller than the sum of its proper divisors (2588185800).

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

923985720 is a wasteful number, since it uses less digits than its factorization.

923985720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8594 (or 8587 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 923985720 is about 30397.1334174787. The cubic root of 923985720 is about 973.9913197551.

The spelling of 923985720 in words is "nine hundred twenty-three million, nine hundred eighty-five thousand, seven hundred twenty".