20554620 has 48 divisors (see below), whose sum is σ = 59542560. Its totient is φ = 5291776.

The previous prime is 20554613. The next prime is 20554627. The reversal of 20554620 is 2645502.

It is an interprime number because it is at equal distance from previous prime (20554613) and next prime (20554627).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4167 + ... + 7646.

It is an arithmetic number, because the mean of its divisors is an integer number (1240470).

Almost surely, 2^20554620 is an apocalyptic number.

20554620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20554620 is an abundant number, since it is smaller than the sum of its proper divisors (38987940).

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

20554620 is a wasteful number, since it uses less digits than its factorization.

20554620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11854 (or 11852 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 20554620 is about 4533.7203266192. The cubic root of 20554620 is about 273.9280362273.

The spelling of 20554620 in words is "twenty million, five hundred fifty-four thousand, six hundred twenty".