136400454 has 24 divisors (see below), whose sum is σ = 295752600. Its totient is φ = 45433248.

The previous prime is 136400447. The next prime is 136400477. The reversal of 136400454 is 454004631.

136400454 is a `hidden beast` number, since 13 + 640 + 0 + 4 + 5 + 4 = 666.

136400454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×136400454² = 37210167702812232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39697 + ... + 42995.

It is an arithmetic number, because the mean of its divisors is an integer number (12323025).

Almost surely, 2^136400454 is an apocalyptic number.

136400454 is an abundant number, since it is smaller than the sum of its proper divisors (159352146).

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

136400454 is a wasteful number, since it uses less digits than its factorization.

136400454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5604 (or 5601 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 136400454 is about 11679.0604930362. The cubic root of 136400454 is about 514.7605686278.

The spelling of 136400454 in words is "one hundred thirty-six million, four hundred thousand, four hundred fifty-four".