157820910 has 64 divisors (see below), whose sum is σ = 418969152. Its totient is φ = 37794816.

The previous prime is 157820903. The next prime is 157820921. The reversal of 157820910 is 19028751.

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, 8962 + ... + 19898.

It is an arithmetic number, because the mean of its divisors is an integer number (6546393).

Almost surely, 2^157820910 is an apocalyptic number.

157820910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157820910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209484576).

157820910 is an abundant number, since it is smaller than the sum of its proper divisors (261148242).

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

157820910 is a wasteful number, since it uses less digits than its factorization.

157820910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10997.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 157820910 is about 12562.6792524525. The cubic root of 157820910 is about 540.4076825332.

The spelling of 157820910 in words is "one hundred fifty-seven million, eight hundred twenty thousand, nine hundred ten".