21482232 has 32 divisors (see below), whose sum is σ = 53844480. Its totient is φ = 7142240.

The previous prime is 21482191. The next prime is 21482239. The reversal of 21482232 is 23228412.

It is a super-2 number, since 2×21482232² = 922972583403648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21482239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10873 + ... + 12695.

It is an arithmetic number, because the mean of its divisors is an integer number (1682640).

Almost surely, 2^21482232 is an apocalyptic number.

It is an amenable number.

21482232 is an abundant number, since it is smaller than the sum of its proper divisors (32362248).

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

21482232 is a wasteful number, since it uses less digits than its factorization.

21482232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323 (or 2319 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 21482232 is about 4634.8928790210. The cubic root of 21482232 is about 277.9882678830.

The spelling of 21482232 in words is "twenty-one million, four hundred eighty-two thousand, two hundred thirty-two".