157722078 has 64 divisors (see below), whose sum is σ = 341913600. Its totient is φ = 48353760.

The previous prime is 157722053. The next prime is 157722101. The reversal of 157722078 is 870227751.

It is a super-6 number, since 6×157722078⁶ (a number of 50 digits) contains 666666 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 747393 + ... + 747603.

It is an arithmetic number, because the mean of its divisors is an integer number (5342400).

Almost surely, 2^157722078 is an apocalyptic number.

157722078 is an abundant number, since it is smaller than the sum of its proper divisors (184191522).

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

157722078 is a wasteful number, since it uses less digits than its factorization.

157722078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 54880, while the sum is 39.

The square root of 157722078 is about 12558.7450806201. The cubic root of 157722078 is about 540.2948526916.

The spelling of 157722078 in words is "one hundred fifty-seven million, seven hundred twenty-two thousand, seventy-eight".