136215494 has 32 divisors (see below), whose sum is σ = 218350080. Its totient is φ = 63622048.

The previous prime is 136215493. The next prime is 136215517. The reversal of 136215494 is 494512631.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136215491) 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, 291449 + ... + 291915.

It is an arithmetic number, because the mean of its divisors is an integer number (6823440).

Almost surely, 2^136215494 is an apocalyptic number.

136215494 is a deficient number, since it is larger than the sum of its proper divisors (82134586).

136215494 is a wasteful number, since it uses less digits than its factorization.

136215494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652.

The product of its digits is 25920, while the sum is 35.

The square root of 136215494 is about 11671.1393616904. The cubic root of 136215494 is about 514.5277903644.

The spelling of 136215494 in words is "one hundred thirty-six million, two hundred fifteen thousand, four hundred ninety-four".