23751428 has 6 divisors (see below), whose sum is σ = 41565006. Its totient is φ = 11875712.

The previous prime is 23751421. The next prime is 23751439. The reversal of 23751428 is 82415732.

It can be written as a sum of positive squares in only one way, i.e., 23059204 + 692224 = 4802^2 + 832^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23751394 and 23751403.

It is not an unprimeable number, because it can be changed into a prime (23751421) 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 as a sum of consecutive naturals, namely, 2968925 + ... + 2968932.

It is an arithmetic number, because the mean of its divisors is an integer number (6927501).

Almost surely, 2^23751428 is an apocalyptic number.

It is an amenable number.

23751428 is a deficient number, since it is larger than the sum of its proper divisors (17813578).

23751428 is a wasteful number, since it uses less digits than its factorization.

23751428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5937861 (or 5937859 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 23751428 is about 4873.5436799110. The cubic root of 23751428 is about 287.4506148318.

The spelling of 23751428 in words is "twenty-three million, seven hundred fifty-one thousand, four hundred twenty-eight".