23421956 has 6 divisors (see below), whose sum is σ = 40988430. Its totient is φ = 11710976.

The previous prime is 23421899. The next prime is 23421961. The reversal of 23421956 is 65912432.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19219456 + 4202500 = 4384^2 + 2050^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2927741 + ... + 2927748.

It is an arithmetic number, because the mean of its divisors is an integer number (6831405).

Almost surely, 2^23421956 is an apocalyptic number.

It is an amenable number.

23421956 is a deficient number, since it is larger than the sum of its proper divisors (17566474).

23421956 is a wasteful number, since it uses less digits than its factorization.

23421956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855493 (or 5855491 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 23421956 is about 4839.6235390782. The cubic root of 23421956 is about 286.1152810891.

The spelling of 23421956 in words is "twenty-three million, four hundred twenty-one thousand, nine hundred fifty-six".