156878214 has 16 divisors (see below), whose sum is σ = 318900720. Its totient is φ = 51435360.

The previous prime is 156878213. The next prime is 156878243. The reversal of 156878214 is 412878651.

It is a super-2 number, since 2×156878214² = 49221548055659592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156878213) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 213949 + ... + 214680.

It is an arithmetic number, because the mean of its divisors is an integer number (19931295).

Almost surely, 2^156878214 is an apocalyptic number.

156878214 is an abundant number, since it is smaller than the sum of its proper divisors (162022506).

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

156878214 is a wasteful number, since it uses less digits than its factorization.

156878214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428695.

The product of its digits is 107520, while the sum is 42.

The square root of 156878214 is about 12525.1033528670. The cubic root of 156878214 is about 539.3295451482.

The spelling of 156878214 in words is "one hundred fifty-six million, eight hundred seventy-eight thousand, two hundred fourteen".