136378554 has 32 divisors (see below), whose sum is σ = 298564224. Its totient is φ = 41273280.

The previous prime is 136378553. The next prime is 136378597. The reversal of 136378554 is 455873631.

It is a super-2 number, since 2×136378554² = 37198219982261832, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (136378553) 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, 9574 + ... + 19089.

It is an arithmetic number, because the mean of its divisors is an integer number (9330132).

Almost surely, 2^136378554 is an apocalyptic number.

136378554 is an abundant number, since it is smaller than the sum of its proper divisors (162185670).

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

136378554 is a wasteful number, since it uses less digits than its factorization.

136378554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28742.

The product of its digits is 302400, while the sum is 42.

The square root of 136378554 is about 11678.1228799838. The cubic root of 136378554 is about 514.7330177424.

The spelling of 136378554 in words is "one hundred thirty-six million, three hundred seventy-eight thousand, five hundred fifty-four".