23994821000 has 32 divisors (see below), whose sum is σ = 56147883480. Its totient is φ = 9597928000.

The previous prime is 23994820961. The next prime is 23994821051. The reversal of 23994821000 is 12849932.

It can be written as a sum of positive squares in 4 ways, for example, as 1173884644 + 22820936356 = 34262^2 + 151066^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11996411 + ... + 11998410.

Almost surely, 2^23994821000 is an apocalyptic number.

23994821000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23994821000 is an abundant number, since it is smaller than the sum of its proper divisors (32153062480).

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

23994821000 is a wasteful number, since it uses less digits than its factorization.

23994821000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23994842 (or 23994828 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 23994821000 in words is "twenty-three billion, nine hundred ninety-four million, eight hundred twenty-one thousand".