156120778 has 8 divisors (see below), whose sum is σ = 255470400. Its totient is φ = 70963980.

The previous prime is 156120773. The next prime is 156120779. The reversal of 156120778 is 877021651.

156120778 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (156120773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3548178 + ... + 3548221.

It is an arithmetic number, because the mean of its divisors is an integer number (31933800).

Almost surely, 2^156120778 is an apocalyptic number.

156120778 is a deficient number, since it is larger than the sum of its proper divisors (99349622).

156120778 is a wasteful number, since it uses less digits than its factorization.

156120778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7096412.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 156120778 is about 12494.8300508650. The cubic root of 156120778 is about 538.4601513653.

The spelling of 156120778 in words is "one hundred fifty-six million, one hundred twenty thousand, seven hundred seventy-eight".