113621478 has 16 divisors (see below), whose sum is σ = 235079280. Its totient is φ = 36567776.

The previous prime is 113621477. The next prime is 113621509. The reversal of 113621478 is 874126311.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113621477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326325 + ... + 326672.

It is an arithmetic number, because the mean of its divisors is an integer number (14692455).

Almost surely, 2^113621478 is an apocalyptic number.

113621478 is an abundant number, since it is smaller than the sum of its proper divisors (121457802).

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

113621478 is a wasteful number, since it uses less digits than its factorization.

113621478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653031.

The product of its digits is 8064, while the sum is 33.

The square root of 113621478 is about 10659.3375966802. The cubic root of 113621478 is about 484.3435025956.

Adding to 113621478 its reverse (874126311), we get a palindrome (987747789).

The spelling of 113621478 in words is "one hundred thirteen million, six hundred twenty-one thousand, four hundred seventy-eight".