13621146 has 32 divisors (see below), whose sum is σ = 33965568. Its totient is φ = 3537840.

The previous prime is 13621123. The next prime is 13621147. The reversal of 13621146 is 64112631.

It is not an unprimeable number, because it can be changed into a prime (13621147) 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, 14280 + ... + 15203.

It is an arithmetic number, because the mean of its divisors is an integer number (1061424).

Almost surely, 2^13621146 is an apocalyptic number.

13621146 is an abundant number, since it is smaller than the sum of its proper divisors (20344422).

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

13621146 is a wasteful number, since it uses less digits than its factorization.

13621146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29506.

The product of its digits is 864, while the sum is 24.

The square root of 13621146 is about 3690.6836765022. The cubic root of 13621146 is about 238.8202870458.

Adding to 13621146 its reverse (64112631), we get a palindrome (77733777).

The spelling of 13621146 in words is "thirteen million, six hundred twenty-one thousand, one hundred forty-six".