13642474 has 8 divisors (see below), whose sum is σ = 20666628. Its totient is φ = 6753600.

The previous prime is 13642469. The next prime is 13642477. The reversal of 13642474 is 47424631.

It can be written as a sum of positive squares in 2 ways, for example, as 13638249 + 4225 = 3693^2 + 65^2 .

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

It is a super-2 number, since 2×13642474² = 372234193681352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13642477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33567 + ... + 33970.

Almost surely, 2^13642474 is an apocalyptic number.

13642474 is a deficient number, since it is larger than the sum of its proper divisors (7024154).

13642474 is a wasteful number, since it uses less digits than its factorization.

13642474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67640.

The product of its digits is 16128, while the sum is 31.

The square root of 13642474 is about 3693.5719838660. The cubic root of 13642474 is about 238.9448703688.

The spelling of 13642474 in words is "thirteen million, six hundred forty-two thousand, four hundred seventy-four".