136847880 has 336 divisors, whose sum is σ = 524705580. Its totient is φ = 31912704.

The previous prime is 136847869. The next prime is 136847903. The reversal of 136847880 is 88748631.

It can be written as a sum of positive squares in 2 ways, for example, as 127373796 + 9474084 = 11286^2 + 3078^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 7202511 + ... + 7202529.

Almost surely, 2^136847880 is an apocalyptic number.

136847880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136847880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262352790).

136847880 is an abundant number, since it is smaller than the sum of its proper divisors (387857700).

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

136847880 is a wasteful number, since it uses less digits than its factorization.

136847880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 136847880 is about 11698.1998615172. The cubic root of 136847880 is about 515.3228001100.

The spelling of 136847880 in words is "one hundred thirty-six million, eight hundred forty-seven thousand, eight hundred eighty".