157700224 has 64 divisors (see below), whose sum is σ = 353882880. Its totient is φ = 69350400.

The previous prime is 157700203. The next prime is 157700233. The reversal of 157700224 is 422007751.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 157700192 and 157700201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41842 + ... + 45454.

It is an arithmetic number, because the mean of its divisors is an integer number (5529420).

Almost surely, 2^157700224 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 157700224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176941440).

157700224 is an abundant number, since it is smaller than the sum of its proper divisors (196182656).

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

157700224 is a wasteful number, since it uses less digits than its factorization.

157700224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3669 (or 3657 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 157700224 is about 12557.8749794701. The cubic root of 157700224 is about 540.2698970877.

Adding to 157700224 its reverse (422007751), we get a palindrome (579707975).

The spelling of 157700224 in words is "one hundred fifty-seven million, seven hundred thousand, two hundred twenty-four".