157216140 has 168 divisors, whose sum is σ = 509005728. Its totient is φ = 40746240.

The previous prime is 157216139. The next prime is 157216141. The reversal of 157216140 is 41612751.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (157216139) and next prime (157216141).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (157216141) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 597649 + ... + 597911.

It is an arithmetic number, because the mean of its divisors is an integer number (3029796).

Almost surely, 2^157216140 is an apocalyptic number.

157216140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157216140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254502864).

157216140 is an abundant number, since it is smaller than the sum of its proper divisors (351789588).

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

157216140 is a wasteful number, since it uses less digits than its factorization.

157216140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 157216140 is about 12538.5860446862. The cubic root of 157216140 is about 539.7165178740.

Adding to 157216140 its reverse (41612751), we get a palindrome (198828891).

The spelling of 157216140 in words is "one hundred fifty-seven million, two hundred sixteen thousand, one hundred forty".