2152664220 has 48 divisors (see below), whose sum is σ = 6888526848. Its totient is φ = 492037440.

The previous prime is 2152664201. The next prime is 2152664221. The reversal of 2152664220 is 224662512.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152664221) 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, 2562276 + ... + 2563115.

It is an arithmetic number, because the mean of its divisors is an integer number (143510976).

Almost surely, 2^2152664220 is an apocalyptic number.

2152664220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2152664220 is an abundant number, since it is smaller than the sum of its proper divisors (4735862628).

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

2152664220 is a wasteful number, since it uses less digits than its factorization.

2152664220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125410 (or 5125408 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 2152664220 is about 46396.8126060401. The cubic root of 2152664220 is about 1291.1957784250.

The spelling of 2152664220 in words is "two billion, one hundred fifty-two million, six hundred sixty-four thousand, two hundred twenty".