136423898 has 12 divisors (see below), whose sum is σ = 221588478. Its totient is φ = 62964720.

The previous prime is 136423813. The next prime is 136423909. The reversal of 136423898 is 898324631.

It can be written as a sum of positive squares in 3 ways, for example, as 96569929 + 39853969 = 9827^2 + 6313^2 .

It is a super-2 number, since 2×136423898² = 37222959891028808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201473 + ... + 202148.

Almost surely, 2^136423898 is an apocalyptic number.

136423898 is a deficient number, since it is larger than the sum of its proper divisors (85164580).

136423898 is a wasteful number, since it uses less digits than its factorization.

136423898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403649 (or 403636 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 136423898 is about 11680.0641265363. The cubic root of 136423898 is about 514.7900586456.

The spelling of 136423898 in words is "one hundred thirty-six million, four hundred twenty-three thousand, eight hundred ninety-eight".