23742978 has 32 divisors (see below), whose sum is σ = 54432384. Its totient is φ = 6763392.

The previous prime is 23742881. The next prime is 23742997. The reversal of 23742978 is 87924732.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18576 + ... + 19812.

It is an arithmetic number, because the mean of its divisors is an integer number (1701012).

Almost surely, 2^23742978 is an apocalyptic number.

23742978 is an abundant number, since it is smaller than the sum of its proper divisors (30689406).

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

23742978 is a wasteful number, since it uses less digits than its factorization.

23742978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706.

The product of its digits is 169344, while the sum is 42.

The square root of 23742978 is about 4872.6766771457. The cubic root of 23742978 is about 287.4165222038.

The spelling of 23742978 in words is "twenty-three million, seven hundred forty-two thousand, nine hundred seventy-eight".