20072232 has 32 divisors (see below), whose sum is σ = 55756800. Its totient is φ = 6690672.

The previous prime is 20072209. The next prime is 20072267. The reversal of 20072232 is 23227002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46248 + ... + 46679.

It is an arithmetic number, because the mean of its divisors is an integer number (1742400).

Almost surely, 2^20072232 is an apocalyptic number.

It is an amenable number.

20072232 is an abundant number, since it is smaller than the sum of its proper divisors (35684568).

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

20072232 is a wasteful number, since it uses less digits than its factorization.

20072232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92942 (or 92932 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 20072232 is about 4480.2044596201. The cubic root of 20072232 is about 271.7681487366.

Adding to 20072232 its reverse (23227002), we get a palindrome (43299234).

The spelling of 20072232 in words is "twenty million, seventy-two thousand, two hundred thirty-two".