136386490 has 32 divisors (see below), whose sum is σ = 251300880. Its totient is φ = 53274624.

The previous prime is 136386487. The next prime is 136386491. The reversal of 136386490 is 94683631.

It can be written as a sum of positive squares in 8 ways, for example, as 14085009 + 122301481 = 3753^2 + 11059^2 .

It is not an unprimeable number, because it can be changed into a prime (136386491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146346 + ... + 147274.

Almost surely, 2^136386490 is an apocalyptic number.

136386490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136386490 is a deficient number, since it is larger than the sum of its proper divisors (114914390).

136386490 is a wasteful number, since it uses less digits than its factorization.

136386490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 136386490 is about 11678.4626556752. The cubic root of 136386490 is about 514.7430018195.

The spelling of 136386490 in words is "one hundred thirty-six million, three hundred eighty-six thousand, four hundred ninety".