136849980 has 24 divisors (see below), whose sum is σ = 383180112. Its totient is φ = 36493312.

The previous prime is 136849967. The next prime is 136849997. The reversal of 136849980 is 89948631.

136849980 = 1343² + 1344² + ... + 1414².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140357 + ... + 1140476.

It is an arithmetic number, because the mean of its divisors is an integer number (15965838).

Almost surely, 2^136849980 is an apocalyptic number.

136849980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136849980 is an abundant number, since it is smaller than the sum of its proper divisors (246330132).

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

136849980 is a wasteful number, since it uses less digits than its factorization.

136849980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280845 (or 2280843 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 136849980 is about 11698.2896185725. The cubic root of 136849980 is about 515.3254360596.

The spelling of 136849980 in words is "one hundred thirty-six million, eight hundred forty-nine thousand, nine hundred eighty".