157204224 has 162 divisors, whose sum is σ = 474947928. Its totient is φ = 49996800.

The previous prime is 157204217. The next prime is 157204247. The reversal of 157204224 is 422402751.

157204224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2214109 + ... + 2214179.

Almost surely, 2^157204224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157204224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237473964).

157204224 is an abundant number, since it is smaller than the sum of its proper divisors (317743704).

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

157204224 is an equidigital number, since it uses as much as digits as its factorization.

157204224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 157204224 is about 12538.1108624864. The cubic root of 157204224 is about 539.7028818174.

Adding to 157204224 its reverse (422402751), we get a palindrome (579606975).

The spelling of 157204224 in words is "one hundred fifty-seven million, two hundred four thousand, two hundred twenty-four".