136485278 has 4 divisors (see below), whose sum is σ = 204727920. Its totient is φ = 68242638.

The previous prime is 136485277. The next prime is 136485287. The reversal of 136485278 is 872584631.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×136485278² = 37256462221474568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136485277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34121318 + ... + 34121321.

It is an arithmetic number, because the mean of its divisors is an integer number (51181980).

Almost surely, 2^136485278 is an apocalyptic number.

136485278 is a deficient number, since it is larger than the sum of its proper divisors (68242642).

136485278 is an equidigital number, since it uses as much as digits as its factorization.

136485278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68242641.

The product of its digits is 322560, while the sum is 44.

The square root of 136485278 is about 11682.6913851218. The cubic root of 136485278 is about 514.8672520518.

The spelling of 136485278 in words is "one hundred thirty-six million, four hundred eighty-five thousand, two hundred seventy-eight".