20702532 has 24 divisors (see below), whose sum is σ = 51147936. Its totient is φ = 6494848.

The previous prime is 20702519. The next prime is 20702543. The reversal of 20702532 is 23520702.

It is a super-2 number, since 2×20702532² = 857189662422048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20702499 and 20702508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50538 + ... + 50945.

It is an arithmetic number, because the mean of its divisors is an integer number (2131164).

Almost surely, 2^20702532 is an apocalyptic number.

It is an amenable number.

20702532 is an abundant number, since it is smaller than the sum of its proper divisors (30445404).

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

20702532 is a wasteful number, since it uses less digits than its factorization.

20702532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101507 (or 101505 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 20702532 is about 4550.0035164822. The cubic root of 20702532 is about 274.5835326946.

The spelling of 20702532 in words is "twenty million, seven hundred two thousand, five hundred thirty-two".