20046620 has 24 divisors (see below), whose sum is σ = 45925488. Its totient is φ = 7289600.

The previous prime is 20046619. The next prime is 20046659. The reversal of 20046620 is 2664002.

It is a Harshad number since it is a multiple of its sum of digits (20).

20046620 is a modest number, since divided by 46620 gives 20 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 20046592 and 20046601.

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, 45341 + ... + 45780.

It is an arithmetic number, because the mean of its divisors is an integer number (1913562).

Almost surely, 2^20046620 is an apocalyptic number.

20046620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20046620 is an abundant number, since it is smaller than the sum of its proper divisors (25878868).

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

20046620 is a wasteful number, since it uses less digits than its factorization.

20046620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91141 (or 91139 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20046620 is about 4477.3451955372. The cubic root of 20046620 is about 271.6525082429.

The spelling of 20046620 in words is "twenty million, forty-six thousand, six hundred twenty".