157621236 has 24 divisors (see below), whose sum is σ = 379647744. Its totient is φ = 50845440.

The previous prime is 157621201. The next prime is 157621237. The reversal of 157621236 is 632126751.

It is a junction number, because it is equal to n+sod(n) for n = 157621197 and 157621206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157621237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211485 + ... + 212228.

It is an arithmetic number, because the mean of its divisors is an integer number (15818656).

Almost surely, 2^157621236 is an apocalyptic number.

It is an amenable number.

157621236 is an abundant number, since it is smaller than the sum of its proper divisors (222026508).

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

157621236 is a wasteful number, since it uses less digits than its factorization.

157621236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423751 (or 423749 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 157621236 is about 12554.7296267184. The cubic root of 157621236 is about 540.1796795758.

Adding to 157621236 its reverse (632126751), we get a palindrome (789747987).

The spelling of 157621236 in words is "one hundred fifty-seven million, six hundred twenty-one thousand, two hundred thirty-six".