152731998 has 24 divisors (see below), whose sum is σ = 334199736. Its totient is φ = 50406000.

The previous prime is 152731993. The next prime is 152732023. The reversal of 152731998 is 899137251.

152731998 is a `hidden beast` number, since 1 + 527 + 31 + 9 + 98 = 666.

152731998 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152731991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40188 + ... + 43823.

It is an arithmetic number, because the mean of its divisors is an integer number (13924989).

Almost surely, 2^152731998 is an apocalyptic number.

152731998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

152731998 is an abundant number, since it is smaller than the sum of its proper divisors (181467738).

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

152731998 is a wasteful number, since it uses less digits than its factorization.

152731998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84120 (or 84117 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 152731998 is about 12358.4787898835. The cubic root of 152731998 is about 534.5356532254.

It can be divided in two parts, 15273 and 1998, that added together give a palindrome (17271).

The spelling of 152731998 in words is "one hundred fifty-two million, seven hundred thirty-one thousand, nine hundred ninety-eight".