20155360 has 48 divisors (see below), whose sum is σ = 49696416. Its totient is φ = 7710208.

The previous prime is 20155357. The next prime is 20155367. The reversal of 20155360 is 6355102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20155367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 942 + ... + 6418.

It is an arithmetic number, because the mean of its divisors is an integer number (1035342).

Almost surely, 2^20155360 is an apocalyptic number.

20155360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20155360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24848208).

20155360 is an abundant number, since it is smaller than the sum of its proper divisors (29541056).

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

20155360 is a wasteful number, since it uses less digits than its factorization.

20155360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5515 (or 5507 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 20155360 is about 4489.4721293266. The cubic root of 20155360 is about 272.1428027533.

The spelling of 20155360 in words is "twenty million, one hundred fifty-five thousand, three hundred sixty".