157240330 has 32 divisors (see below), whose sum is σ = 312249168. Its totient is φ = 56640000.

The previous prime is 157240313. The next prime is 157240337. The reversal of 157240330 is 33042751.

It can be written as a sum of positive squares in 8 ways, for example, as 5285401 + 151954929 = 2299^2 + 12327^2 .

It is a junction number, because it is equal to n+sod(n) for n = 157240295 and 157240304.

It is not an unprimeable number, because it can be changed into a prime (157240337) 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 15 ways as a sum of consecutive naturals, for example, 9421 + ... + 20080.

Almost surely, 2^157240330 is an apocalyptic number.

157240330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157240330 is a deficient number, since it is larger than the sum of its proper divisors (155008838).

157240330 is a wasteful number, since it uses less digits than its factorization.

157240330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29562.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 157240330 is about 12539.5506299070. The cubic root of 157240330 is about 539.7441975448.

The spelling of 157240330 in words is "one hundred fifty-seven million, two hundred forty thousand, three hundred thirty".