136489770 has 48 divisors (see below), whose sum is σ = 375752520. Its totient is φ = 34255872.

The previous prime is 136489763. The next prime is 136489819. The reversal of 136489770 is 77984631.

It can be written as a sum of positive squares in 4 ways, for example, as 111957561 + 24532209 = 10581^2 + 4953^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43075 + ... + 46134.

Almost surely, 2^136489770 is an apocalyptic number.

136489770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136489770 is an abundant number, since it is smaller than the sum of its proper divisors (239262750).

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

136489770 is a wasteful number, since it uses less digits than its factorization.

136489770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89239 (or 89236 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 136489770 is about 11682.8836337610. The cubic root of 136489770 is about 514.8729004225.

The spelling of 136489770 in words is "one hundred thirty-six million, four hundred eighty-nine thousand, seven hundred seventy".