2157062886 has 84 divisors (see below), whose sum is σ = 5332716396. Its totient is φ = 653601960.

The previous prime is 2157062881. The next prime is 2157062903. The reversal of 2157062886 is 6882607512.

2157062886 is a `hidden beast` number, since 2 + 15 + 7 + 0 + 628 + 8 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157062881) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 170305 + ... + 182531.

It is an arithmetic number, because the mean of its divisors is an integer number (63484719).

Almost surely, 2^2157062886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157062886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2666358198).

2157062886 is an abundant number, since it is smaller than the sum of its proper divisors (3175653510).

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

2157062886 is a wasteful number, since it uses less digits than its factorization.

2157062886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12269 (or 12243 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 2157062886 is about 46444.1910899523. The cubic root of 2157062886 is about 1292.0746389639.

The spelling of 2157062886 in words is "two billion, one hundred fifty-seven million, sixty-two thousand, eight hundred eighty-six".