23384772 has 18 divisors (see below), whose sum is σ = 59111598. Its totient is φ = 7794912.

The previous prime is 23384761. The next prime is 23384783. The reversal of 23384772 is 27748332.

It is an interprime number because it is at equal distance from previous prime (23384761) and next prime (23384783).

It can be written as a sum of positive squares in only one way, i.e., 15634116 + 7750656 = 3954^2 + 2784^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×23384772² = 1093695122983968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 649577 = 23384772 / (2 + 3 + 3 + 8 + 4 + 7 + 7 + 2).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 324753 + ... + 324824.

Almost surely, 2^23384772 is an apocalyptic number.

It is an amenable number.

23384772 is an abundant number, since it is smaller than the sum of its proper divisors (35726826).

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

23384772 is a wasteful number, since it uses less digits than its factorization.

23384772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649587 (or 649582 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 23384772 is about 4835.7803920360. The cubic root of 23384772 is about 285.9637915267.

The spelling of 23384772 in words is "twenty-three million, three hundred eighty-four thousand, seven hundred seventy-two".