136440280 has 16 divisors (see below), whose sum is σ = 306990720. Its totient is φ = 54576096.

The previous prime is 136440221. The next prime is 136440281. The reversal of 136440280 is 82044631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136440281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1705464 + ... + 1705543.

It is an arithmetic number, because the mean of its divisors is an integer number (19186920).

Almost surely, 2^136440280 is an apocalyptic number.

136440280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136440280 is an abundant number, since it is smaller than the sum of its proper divisors (170550440).

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

136440280 is a wasteful number, since it uses less digits than its factorization.

136440280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411018 (or 3411014 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 136440280 is about 11680.7653858812. The cubic root of 136440280 is about 514.8106634255.

The spelling of 136440280 in words is "one hundred thirty-six million, four hundred forty thousand, two hundred eighty".