2157228588 has 24 divisors (see below), whose sum is σ = 5035484608. Its totient is φ = 718797456.

The previous prime is 2157228551. The next prime is 2157228613. The reversal of 2157228588 is 8858227512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1306 + ... + 65697.

Almost surely, 2^2157228588 is an apocalyptic number.

It is an amenable number.

2157228588 is an abundant number, since it is smaller than the sum of its proper divisors (2878256020).

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

2157228588 is a wasteful number, since it uses less digits than its factorization.

2157228588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69693 (or 69691 counting only the distinct ones).

The product of its digits is 716800, while the sum is 48.

The square root of 2157228588 is about 46445.9749386317. The cubic root of 2157228588 is about 1292.1077231284.

The spelling of 2157228588 in words is "two billion, one hundred fifty-seven million, two hundred twenty-eight thousand, five hundred eighty-eight".