135688254 has 32 divisors (see below), whose sum is σ = 309445920. Its totient is φ = 39293952.

The previous prime is 135688219. The next prime is 135688277. The reversal of 135688254 is 452886531.

It is a super-2 number, since 2×135688254² = 36822604547137032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49839 + ... + 52490.

It is an arithmetic number, because the mean of its divisors is an integer number (9670185).

Almost surely, 2^135688254 is an apocalyptic number.

135688254 is an abundant number, since it is smaller than the sum of its proper divisors (173757666).

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

135688254 is a wasteful number, since it uses less digits than its factorization.

135688254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102364.

The product of its digits is 230400, while the sum is 42.

The square root of 135688254 is about 11648.5301218652. The cubic root of 135688254 is about 513.8630828321.

The spelling of 135688254 in words is "one hundred thirty-five million, six hundred eighty-eight thousand, two hundred fifty-four".