157998084 has 12 divisors (see below), whose sum is σ = 368662224. Its totient is φ = 52666024.

The previous prime is 157998083. The next prime is 157998089. The reversal of 157998084 is 480899751.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (157998083) 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, 6583242 + ... + 6583265.

It is an arithmetic number, because the mean of its divisors is an integer number (30721852).

Almost surely, 2^157998084 is an apocalyptic number.

It is an amenable number.

157998084 is an abundant number, since it is smaller than the sum of its proper divisors (210664140).

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

157998084 is a wasteful number, since it uses less digits than its factorization.

157998084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13166514 (or 13166512 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 157998084 is about 12569.7288753577. The cubic root of 157998084 is about 540.6098323075.

The spelling of 157998084 in words is "one hundred fifty-seven million, nine hundred ninety-eight thousand, eighty-four".