136851904 has 126 divisors (see below), whose sum is σ = 337800696. Its totient is φ = 54835200.

The previous prime is 136851893. The next prime is 136851961. The reversal of 136851904 is 409158631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 906229 + ... + 906379.

Almost surely, 2^136851904 is an apocalyptic number.

136851904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

136851904 is the 7399-th heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136851904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168900348).

136851904 is an abundant number, since it is smaller than the sum of its proper divisors (200948792).

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

136851904 is a wasteful number, since it uses less digits than its factorization.

136851904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 136851904 is about 11698.3718525272. The cubic root of 136851904 is about 515.3278510678.

The spelling of 136851904 in words is "one hundred thirty-six million, eight hundred fifty-one thousand, nine hundred four".