157343940 has 144 divisors (see below), whose sum is σ = 541195200. Its totient is φ = 36681984.

The previous prime is 157343929. The next prime is 157344001. The reversal of 157343940 is 49343751.

157343940 is a `hidden beast` number, since 1 + 573 + 43 + 9 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 157343895 and 157343904.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42691 + ... + 46229.

It is an arithmetic number, because the mean of its divisors is an integer number (3758300).

Almost surely, 2^157343940 is an apocalyptic number.

157343940 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 157343940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270597600).

157343940 is an abundant number, since it is smaller than the sum of its proper divisors (383851260).

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

157343940 is a wasteful number, since it uses less digits than its factorization.

157343940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586 (or 3581 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 157343940 is about 12543.6812778387. The cubic root of 157343940 is about 539.8627223061.

The spelling of 157343940 in words is "one hundred fifty-seven million, three hundred forty-three thousand, nine hundred forty".