157793922 has 72 divisors (see below), whose sum is σ = 404772732. Its totient is φ = 44130240.

The previous prime is 157793893. The next prime is 157793929. The reversal of 157793922 is 229397751.

It can be written as a sum of positive squares in 2 ways, for example, as 123676641 + 34117281 = 11121^2 + 5841^2 .

It is not an unprimeable number, because it can be changed into a prime (157793929) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25528 + ... + 31100.

Almost surely, 2^157793922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157793922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202386366).

157793922 is an abundant number, since it is smaller than the sum of its proper divisors (246978810).

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

157793922 is a wasteful number, since it uses less digits than its factorization.

157793922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5616 (or 5602 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 157793922 is about 12561.6050726012. The cubic root of 157793922 is about 540.3768768266.

It can be divided in two parts, 15779 and 3922, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 157793922 in words is "one hundred fifty-seven million, seven hundred ninety-three thousand, nine hundred twenty-two".