136478454 has 32 divisors (see below), whose sum is σ = 313103616. Its totient is φ = 38849760.

The previous prime is 136478449. The next prime is 136478471. The reversal of 136478454 is 454874631.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5769 + ... + 17499.

It is an arithmetic number, because the mean of its divisors is an integer number (9784488).

Almost surely, 2^136478454 is an apocalyptic number.

136478454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

136478454 is an abundant number, since it is smaller than the sum of its proper divisors (176625162).

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

136478454 is a wasteful number, since it uses less digits than its factorization.

136478454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12020.

The product of its digits is 322560, while the sum is 42.

The square root of 136478454 is about 11682.3993254810. The cubic root of 136478454 is about 514.8586711198.

The spelling of 136478454 in words is "one hundred thirty-six million, four hundred seventy-eight thousand, four hundred fifty-four".