13621408 has 24 divisors (see below), whose sum is σ = 27004320. Its totient is φ = 6763200.

The previous prime is 13621381. The next prime is 13621409. The reversal of 13621408 is 80412631.

13621408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13621409) 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, 3423 + ... + 6241.

It is an arithmetic number, because the mean of its divisors is an integer number (1125180).

Almost surely, 2^13621408 is an apocalyptic number.

It is an amenable number.

13621408 is a deficient number, since it is larger than the sum of its proper divisors (13382912).

13621408 is a wasteful number, since it uses less digits than its factorization.

13621408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2980 (or 2972 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 13621408 is about 3690.7191711102. The cubic root of 13621408 is about 238.8218182561.

It can be divided in two parts, 1 and 3621408, that added together give a square (3621409 = 1903²).

The spelling of 13621408 in words is "thirteen million, six hundred twenty-one thousand, four hundred eight".