157749684 has 24 divisors (see below), whose sum is σ = 369522048. Its totient is φ = 52377600.

The previous prime is 157749667. The next prime is 157749689. The reversal of 157749684 is 486947751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157749689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22492 + ... + 28659.

It is an arithmetic number, because the mean of its divisors is an integer number (15396752).

Almost surely, 2^157749684 is an apocalyptic number.

It is an amenable number.

157749684 is an abundant number, since it is smaller than the sum of its proper divisors (211772364).

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

157749684 is a wasteful number, since it uses less digits than its factorization.

157749684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51415 (or 51413 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 157749684 is about 12559.8441073128. The cubic root of 157749684 is about 540.3263733465.

The spelling of 157749684 in words is "one hundred fifty-seven million, seven hundred forty-nine thousand, six hundred eighty-four".