136782378 has 16 divisors (see below), whose sum is σ = 303960960. Its totient is φ = 45594108.

The previous prime is 136782343. The next prime is 136782383. The reversal of 136782378 is 873287631.

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, 1266450 + ... + 1266557.

It is an arithmetic number, because the mean of its divisors is an integer number (18997560).

Almost surely, 2^136782378 is an apocalyptic number.

136782378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

136782378 is an abundant number, since it is smaller than the sum of its proper divisors (167178582).

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

136782378 is a wasteful number, since it uses less digits than its factorization.

136782378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533018 (or 2533012 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 136782378 is about 11695.3998649041. The cubic root of 136782378 is about 515.2405675341.

The spelling of 136782378 in words is "one hundred thirty-six million, seven hundred eighty-two thousand, three hundred seventy-eight".