20355084 has 24 divisors (see below), whose sum is σ = 52772720. Its totient is φ = 6784992.

The previous prime is 20355067. The next prime is 20355107. The reversal of 20355084 is 48055302.

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

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, 94129 + ... + 94344.

Almost surely, 2^20355084 is an apocalyptic number.

It is an amenable number.

20355084 is an abundant number, since it is smaller than the sum of its proper divisors (32417636).

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

20355084 is a wasteful number, since it uses less digits than its factorization.

20355084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188486 (or 188478 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 20355084 is about 4511.6608915121. The cubic root of 20355084 is about 273.0387579316.

The spelling of 20355084 in words is "twenty million, three hundred fifty-five thousand, eighty-four".