23038428 has 36 divisors (see below), whose sum is σ = 62534472. Its totient is φ = 6582240.

The previous prime is 23038423. The next prime is 23038439. The reversal of 23038428 is 82483032.

It is a super-2 number, since 2×23038428² = 1061538329422368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23038395 and 23038404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23038423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19003 + ... + 20178.

Almost surely, 2^23038428 is an apocalyptic number.

23038428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23038428 is an abundant number, since it is smaller than the sum of its proper divisors (39496044).

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

23038428 is a wasteful number, since it uses less digits than its factorization.

23038428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39202 (or 39193 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 23038428 is about 4799.8362472068. The cubic root of 23038428 is about 284.5449926423.

It can be divided in two parts, 2303 and 8428, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 23038428 in words is "twenty-three million, thirty-eight thousand, four hundred twenty-eight".