20255432 has 24 divisors (see below), whose sum is σ = 40349010. Its totient is φ = 9530880.

The previous prime is 20255429. The next prime is 20255441. The reversal of 20255432 is 23455202.

It can be written as a sum of positive squares in 3 ways, for example, as 17926756 + 2328676 = 4234^2 + 1526^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20255398 and 20255407.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2069 + ... + 6692.

Almost surely, 2^20255432 is an apocalyptic number.

It is an amenable number.

20255432 is a deficient number, since it is larger than the sum of its proper divisors (20093578).

20255432 is a wasteful number, since it uses less digits than its factorization.

20255432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8801 (or 8780 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 20255432 is about 4500.6035150855. The cubic root of 20255432 is about 272.5924585955.

The spelling of 20255432 in words is "twenty million, two hundred fifty-five thousand, four hundred thirty-two".