157828673 has 4 divisors (see below), whose sum is σ = 158874048. Its totient is φ = 156783300.

The previous prime is 157828661. The next prime is 157828813. The reversal of 157828673 is 376828751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-157828673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157828613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522461 + ... + 522762.

It is an arithmetic number, because the mean of its divisors is an integer number (39718512).

Almost surely, 2^157828673 is an apocalyptic number.

It is an amenable number.

157828673 is a deficient number, since it is larger than the sum of its proper divisors (1045375).

157828673 is a wasteful number, since it uses less digits than its factorization.

157828673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045374.

The product of its digits is 564480, while the sum is 47.

The square root of 157828673 is about 12562.9882193688. The cubic root of 157828673 is about 540.4165430322.

The spelling of 157828673 in words is "one hundred fifty-seven million, eight hundred twenty-eight thousand, six hundred seventy-three".