157994940 has 48 divisors (see below), whose sum is σ = 468411552. Its totient is φ = 39653376.

The previous prime is 157994939. The next prime is 157994953. The reversal of 157994940 is 49499751.

It is a self number, because there is not a number n which added to its sum of digits gives 157994940.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76429 + ... + 78468.

It is an arithmetic number, because the mean of its divisors is an integer number (9758574).

Almost surely, 2^157994940 is an apocalyptic number.

157994940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157994940 is an abundant number, since it is smaller than the sum of its proper divisors (310416612).

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

157994940 is a wasteful number, since it uses less digits than its factorization.

157994940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154926 (or 154924 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 157994940 is about 12569.6038123721. The cubic root of 157994940 is about 540.6062464231.

The spelling of 157994940 in words is "one hundred fifty-seven million, nine hundred ninety-four thousand, nine hundred forty".