20807332 has 24 divisors (see below), whose sum is σ = 44816576. Its totient is φ = 8231328.

The previous prime is 20807329. The next prime is 20807359. The reversal of 20807332 is 23370802.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20807297 and 20807306.

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, 28218 + ... + 28945.

Almost surely, 2^20807332 is an apocalyptic number.

It is an amenable number.

20807332 is an abundant number, since it is smaller than the sum of its proper divisors (24009244).

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

20807332 is a wasteful number, since it uses less digits than its factorization.

20807332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57187 (or 57185 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20807332 is about 4561.5054532468. The cubic root of 20807332 is about 275.0460837370.

The spelling of 20807332 in words is "twenty million, eight hundred seven thousand, three hundred thirty-two".