20655030 has 32 divisors (see below), whose sum is σ = 54079488. Its totient is φ = 5007200.

The previous prime is 20655023. The next prime is 20655049. The reversal of 20655030 is 3055602.

It is a junction number, because it is equal to n+sod(n) for n = 20654988 and 20655006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30966 + ... + 31625.

It is an arithmetic number, because the mean of its divisors is an integer number (1689984).

Almost surely, 2^20655030 is an apocalyptic number.

20655030 is an abundant number, since it is smaller than the sum of its proper divisors (33424458).

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

20655030 is a wasteful number, since it uses less digits than its factorization.

20655030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62612.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 20655030 is about 4544.7805227535. The cubic root of 20655030 is about 274.3733610493.

The spelling of 20655030 in words is "twenty million, six hundred fifty-five thousand, thirty".