23403870 has 192 divisors, whose sum is σ = 76334400. Its totient is φ = 5080320.

The previous prime is 23403851. The next prime is 23403929. The reversal of 23403870 is 7830432.

It is a super-2 number, since 2×23403870² = 1095482261953800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 383640 + ... + 383700.

It is an arithmetic number, because the mean of its divisors is an integer number (397575).

Almost surely, 2^23403870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23403870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38167200).

23403870 is an abundant number, since it is smaller than the sum of its proper divisors (52930530).

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

23403870 is a wasteful number, since it uses less digits than its factorization.

23403870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 23403870 is about 4837.7546444606. The cubic root of 23403870 is about 286.0416178209.

The spelling of 23403870 in words is "twenty-three million, four hundred three thousand, eight hundred seventy".