23038978 has 16 divisors (see below), whose sum is σ = 36694944. Its totient is φ = 10811200.

The previous prime is 23038957. The next prime is 23038979. The reversal of 23038978 is 87983032.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23038978.

It is not an unprimeable number, because it can be changed into a prime (23038979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15153 + ... + 16603.

It is an arithmetic number, because the mean of its divisors is an integer number (2293434).

Almost surely, 2^23038978 is an apocalyptic number.

23038978 is a deficient number, since it is larger than the sum of its proper divisors (13655966).

23038978 is a wasteful number, since it uses less digits than its factorization.

23038978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 23038978 is about 4799.8935404861. The cubic root of 23038978 is about 284.5472569533.

The spelling of 23038978 in words is "twenty-three million, thirty-eight thousand, nine hundred seventy-eight".