20553708 has 24 divisors (see below), whose sum is σ = 54810112. Its totient is φ = 5872464.

The previous prime is 20553707. The next prime is 20553727. The reversal of 20553708 is 80735502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20553703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122260 + ... + 122427.

Almost surely, 2^20553708 is an apocalyptic number.

20553708 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20553708 is an abundant number, since it is smaller than the sum of its proper divisors (34256404).

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

20553708 is a wasteful number, since it uses less digits than its factorization.

20553708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244701 (or 244699 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 20553708 is about 4533.6197458543. The cubic root of 20553708 is about 273.9239848095.

It can be divided in two parts, 2055370 and 8, that added together give a triangular number (2055378 = T₂₀₂₇).

The spelling of 20553708 in words is "twenty million, five hundred fifty-three thousand, seven hundred eight".