157230073 has 48 divisors (see below), whose sum is σ = 226376640. Its totient is φ = 107049600.

The previous prime is 157230061. The next prime is 157230077. The reversal of 157230073 is 370032751.

It is not a de Polignac number, because 157230073 - 2⁵ = 157230041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157230077) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 132543 + ... + 133723.

It is an arithmetic number, because the mean of its divisors is an integer number (4716180).

Almost surely, 2^157230073 is an apocalyptic number.

157230073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

157230073 is a deficient number, since it is larger than the sum of its proper divisors (69146567).

157230073 is a wasteful number, since it uses less digits than its factorization.

157230073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 157230073 is about 12539.1416372892. The cubic root of 157230073 is about 539.7324612076.

Multiplying 157230073 by its sum of digits (28), we get a palindrome (4402442044).

The spelling of 157230073 in words is "one hundred fifty-seven million, two hundred thirty thousand, seventy-three".