21233058 has 32 divisors (see below), whose sum is σ = 52945920. Its totient is φ = 5514960.

The previous prime is 21233029. The next prime is 21233059. The reversal of 21233058 is 85033212.

It is a super-3 number, since 3×21233058³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21233059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22518 + ... + 23441.

It is an arithmetic number, because the mean of its divisors is an integer number (1654560).

Almost surely, 2^21233058 is an apocalyptic number.

21233058 is an abundant number, since it is smaller than the sum of its proper divisors (31712862).

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

21233058 is a wasteful number, since it uses less digits than its factorization.

21233058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45982.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 21233058 is about 4607.9342443225. The cubic root of 21233058 is about 276.9092831567.

The spelling of 21233058 in words is "twenty-one million, two hundred thirty-three thousand, fifty-eight".