23990351040 has 448 divisors, whose sum is σ = 90123995520. Its totient is φ = 5986713600.

The previous prime is 23990351039. The next prime is 23990351069. The reversal of 23990351040 is 4015309932.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23990350986 and 23990351004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34222690 + ... + 34223390.

Almost surely, 2^23990351040 is an apocalyptic number.

23990351040 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 23990351040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45061997760).

23990351040 is an abundant number, since it is smaller than the sum of its proper divisors (66133644480).

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

23990351040 is a wasteful number, since it uses less digits than its factorization.

23990351040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The spelling of 23990351040 in words is "twenty-three billion, nine hundred ninety million, three hundred fifty-one thousand, forty".