23905978 has 8 divisors (see below), whose sum is σ = 37968372. Its totient is φ = 11249856.

The previous prime is 23905969. The next prime is 23906017. The reversal of 23905978 is 87950932.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20457529 + 3448449 = 4523^2 + 1857^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351525 + ... + 351592.

Almost surely, 2^23905978 is an apocalyptic number.

23905978 is a deficient number, since it is larger than the sum of its proper divisors (14062394).

23905978 is a wasteful number, since it uses less digits than its factorization.

23905978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703136.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 23905978 is about 4889.3739885593. The cubic root of 23905978 is about 288.0727455769.

The spelling of 23905978 in words is "twenty-three million, nine hundred five thousand, nine hundred seventy-eight".