13457878 has 8 divisors (see below), whose sum is σ = 23070672. Its totient is φ = 5767656.

The previous prime is 13457849. The next prime is 13457879. The reversal of 13457878 is 87875431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13457878² = 362228960525768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13457879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480625 + ... + 480652.

It is an arithmetic number, because the mean of its divisors is an integer number (2883834).

Almost surely, 2^13457878 is an apocalyptic number.

13457878 is a deficient number, since it is larger than the sum of its proper divisors (9612794).

13457878 is an equidigital number, since it uses as much as digits as its factorization.

13457878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961286.

The product of its digits is 188160, while the sum is 43.

The square root of 13457878 is about 3668.4980577888. The cubic root of 13457878 is about 237.8622534608.

The spelling of 13457878 in words is "thirteen million, four hundred fifty-seven thousand, eight hundred seventy-eight".