2157304206 has 16 divisors (see below), whose sum is σ = 4336966224. Its totient is φ = 715375104.

The previous prime is 2157304157. The next prime is 2157304243. The reversal of 2157304206 is 6024037512.

It is a super-2 number, since 2×2157304206² = 9307922874450580872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930321 + ... + 932636.

It is an arithmetic number, because the mean of its divisors is an integer number (271060389).

Almost surely, 2^2157304206 is an apocalyptic number.

2157304206 is an abundant number, since it is smaller than the sum of its proper divisors (2179662018).

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

2157304206 is a wasteful number, since it uses less digits than its factorization.

2157304206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863155.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 2157304206 is about 46446.7889740507. The cubic root of 2157304206 is about 1292.1228205024.

The spelling of 2157304206 in words is "two billion, one hundred fifty-seven million, three hundred four thousand, two hundred six".