23003428 has 12 divisors (see below), whose sum is σ = 46006912. Its totient is φ = 9858600.

The previous prime is 23003423. The next prime is 23003437. The reversal of 23003428 is 82430032.

23003428 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 23003399 and 23003408.

It is not an unprimeable number, because it can be changed into a prime (23003423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410748 + ... + 410803.

Almost surely, 2^23003428 is an apocalyptic number.

23003428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23003428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

23003428 is a wasteful number, since it uses less digits than its factorization.

23003428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821562 (or 821560 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 23003428 is about 4796.1889037026. The cubic root of 23003428 is about 284.4008259442.

The spelling of 23003428 in words is "twenty-three million, three thousand, four hundred twenty-eight".