13520074 has 4 divisors (see below), whose sum is σ = 20280114. Its totient is φ = 6760036.

The previous prime is 13520071. The next prime is 13520081. The reversal of 13520074 is 47002531.

13520074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12299049 + 1221025 = 3507^2 + 1105^2 .

It is not an unprimeable number, because it can be changed into a prime (13520071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3380017 + ... + 3380020.

Almost surely, 2^13520074 is an apocalyptic number.

13520074 is a deficient number, since it is larger than the sum of its proper divisors (6760040).

13520074 is an equidigital number, since it uses as much as digits as its factorization.

13520074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760039.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 13520074 is about 3676.9653248297. The cubic root of 13520074 is about 238.2281196748.

The spelling of 13520074 in words is "thirteen million, five hundred twenty thousand, seventy-four".