208840880 has 40 divisors (see below), whose sum is σ = 497405664. Its totient is φ = 81497600.

The previous prime is 208840873. The next prime is 208840927. The reversal of 208840880 is 88048802.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×208840880² = 87229026318348800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28556 + ... + 35115.

Almost surely, 2^208840880 is an apocalyptic number.

208840880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208840880 is an abundant number, since it is smaller than the sum of its proper divisors (288564784).

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

208840880 is a wasteful number, since it uses less digits than its factorization.

208840880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63725 (or 63719 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 208840880 is about 14451.3279666611. The cubic root of 208840880 is about 593.2965708261.

The spelling of 208840880 in words is "two hundred eight million, eight hundred forty thousand, eight hundred eighty".