20473650 has 36 divisors (see below), whose sum is σ = 55007082. Its totient is φ = 5459520.

The previous prime is 20473601. The next prime is 20473667. The reversal of 20473650 is 5637402.

It is a happy number.

20473650 is a `hidden beast` number, since 2 + 0 + 4 + 7 + 3 + 650 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 11634921 + 8838729 = 3411^2 + 2973^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22299 + ... + 23198.

Almost surely, 2^20473650 is an apocalyptic number.

20473650 is an abundant number, since it is smaller than the sum of its proper divisors (34533432).

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

20473650 is a wasteful number, since it uses less digits than its factorization.

20473650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45515 (or 45507 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 20473650 is about 4524.7817626931. The cubic root of 20473650 is about 273.5678715993.

The spelling of 20473650 in words is "twenty million, four hundred seventy-three thousand, six hundred fifty".