20103408 has 60 divisors (see below), whose sum is σ = 60595080. Its totient is φ = 6185088.

The previous prime is 20103383. The next prime is 20103427. The reversal of 20103408 is 80430102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3498 + ... + 7241.

It is an arithmetic number, because the mean of its divisors is an integer number (1009918).

Almost surely, 2^20103408 is an apocalyptic number.

It is an amenable number.

20103408 is an abundant number, since it is smaller than the sum of its proper divisors (40491672).

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

20103408 is a wasteful number, since it uses less digits than its factorization.

20103408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10766 (or 10757 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20103408 is about 4483.6824151583. The cubic root of 20103408 is about 271.9087785221.

The spelling of 20103408 in words is "twenty million, one hundred three thousand, four hundred eight".