20473632 has 36 divisors (see below), whose sum is σ = 58222710. Its totient is φ = 6824448.

The previous prime is 20473601. The next prime is 20473667. The reversal of 20473632 is 23637402.

20473632 is a `hidden beast` number, since 20 + 4 + 7 + 3 + 632 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20466576 + 7056 = 4524^2 + 84^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 20473596 and 20473605.

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, 35257 + ... + 35832.

Almost surely, 2^20473632 is an apocalyptic number.

It is an amenable number.

20473632 is an abundant number, since it is smaller than the sum of its proper divisors (37749078).

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

20473632 is a wasteful number, since it uses less digits than its factorization.

20473632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71105 (or 71094 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 20473632 is about 4524.7797736464. The cubic root of 20473632 is about 273.5677914276.

The spelling of 20473632 in words is "twenty million, four hundred seventy-three thousand, six hundred thirty-two".