20054188 has 24 divisors (see below), whose sum is σ = 43755264. Its totient is φ = 7813200.

The previous prime is 20054149. The next prime is 20054191. The reversal of 20054188 is 88145002.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 32248 + ... + 32863.

It is an arithmetic number, because the mean of its divisors is an integer number (1823136).

Almost surely, 2^20054188 is an apocalyptic number.

20054188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20054188 is an abundant number, since it is smaller than the sum of its proper divisors (23701076).

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

20054188 is a wasteful number, since it uses less digits than its factorization.

20054188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65133 (or 65131 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 20054188 is about 4478.1902594687. The cubic root of 20054188 is about 271.6866886937.

The spelling of 20054188 in words is "twenty million, fifty-four thousand, one hundred eighty-eight".