157298990 has 16 divisors (see below), whose sum is σ = 285737760. Its totient is φ = 62341920.

The previous prime is 157298971. The next prime is 157298993. The reversal of 157298990 is 99892751.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157298993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71066 + ... + 73245.

It is an arithmetic number, because the mean of its divisors is an integer number (17858610).

Almost surely, 2^157298990 is an apocalyptic number.

157298990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157298990 is a deficient number, since it is larger than the sum of its proper divisors (128438770).

157298990 is a wasteful number, since it uses less digits than its factorization.

157298990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144427.

The product of its (nonzero) digits is 408240, while the sum is 50.

The square root of 157298990 is about 12541.8894110895. The cubic root of 157298990 is about 539.8113081015.

The spelling of 157298990 in words is "one hundred fifty-seven million, two hundred ninety-eight thousand, nine hundred ninety".