13640902 has 16 divisors (see below), whose sum is σ = 23635152. Its totient is φ = 5835520.

The previous prime is 13640867. The next prime is 13640911. The reversal of 13640902 is 20904631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17863 + ... + 18610.

It is an arithmetic number, because the mean of its divisors is an integer number (1477197).

Almost surely, 2^13640902 is an apocalyptic number.

13640902 is a deficient number, since it is larger than the sum of its proper divisors (9994250).

13640902 is a wasteful number, since it uses less digits than its factorization.

13640902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36503.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 13640902 is about 3693.3591756015. The cubic root of 13640902 is about 238.9356922739.

It can be divided in two parts, 13640 and 902, that multiplied together give a triangular number (12303280 = T₄₉₆₀).

The spelling of 13640902 in words is "thirteen million, six hundred forty thousand, nine hundred two".