2157214328 has 16 divisors (see below), whose sum is σ = 4045892760. Its totient is φ = 1078309600.

The previous prime is 2157214289. The next prime is 2157214333. The reversal of 2157214328 is 8234127512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4718 + ... + 65853.

Almost surely, 2^2157214328 is an apocalyptic number.

It is an amenable number.

2157214328 is a deficient number, since it is larger than the sum of its proper divisors (1888678432).

2157214328 is a wasteful number, since it uses less digits than its factorization.

2157214328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74398 (or 74394 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 2157214328 is about 46445.8214266903. The cubic root of 2157214328 is about 1292.1048760345.

The spelling of 2157214328 in words is "two billion, one hundred fifty-seven million, two hundred fourteen thousand, three hundred twenty-eight".