23319689400 has 672 divisors, whose sum is σ = 94476646560. Its totient is φ = 5240401920.

The previous prime is 23319689389. The next prime is 23319689447. The reversal of 23319689400 is 498691332.

It is a happy number.

23319689400 is a `hidden beast` number, since 233 + 1 + 9 + 6 + 8 + 9 + 400 = 666.

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 167 ways as a sum of consecutive naturals, for example, 74503644 + ... + 74503956.

Almost surely, 2^23319689400 is an apocalyptic number.

23319689400 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 23319689400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47238323280).

23319689400 is an abundant number, since it is smaller than the sum of its proper divisors (71156957160).

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

23319689400 is a wasteful number, since it uses less digits than its factorization.

23319689400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 23319689400 in words is "twenty-three billion, three hundred nineteen million, six hundred eighty-nine thousand, four hundred".