208113408 has 72 divisors (see below), whose sum is σ = 615448400. Its totient is φ = 69368832.

The previous prime is 208113401. The next prime is 208113431. The reversal of 208113408 is 804311802.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×208113408² = 86622381178748928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208113401) 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, 8143 + ... + 21966.

Almost surely, 2^208113408 is an apocalyptic number.

It is an amenable number.

208113408 is an abundant number, since it is smaller than the sum of its proper divisors (407334992).

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

208113408 is an equidigital number, since it uses as much as digits as its factorization.

208113408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30134 (or 30114 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 208113408 is about 14426.1362810699. The cubic root of 208113408 is about 592.6068770507.

The spelling of 208113408 in words is "two hundred eight million, one hundred thirteen thousand, four hundred eight".