13402724 has 6 divisors (see below), whose sum is σ = 23454774. Its totient is φ = 6701360.

The previous prime is 13402717. The next prime is 13402729. The reversal of 13402724 is 42720431.

It can be written as a sum of positive squares in only one way, i.e., 8702500 + 4700224 = 2950^2 + 2168^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13402724.

It is not an unprimeable number, because it can be changed into a prime (13402729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1675337 + ... + 1675344.

It is an arithmetic number, because the mean of its divisors is an integer number (3909129).

Almost surely, 2^13402724 is an apocalyptic number.

It is an amenable number.

13402724 is a deficient number, since it is larger than the sum of its proper divisors (10052050).

13402724 is a wasteful number, since it uses less digits than its factorization.

13402724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350685 (or 3350683 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 13402724 is about 3660.9730946840. The cubic root of 13402724 is about 237.5368674069.

The spelling of 13402724 in words is "thirteen million, four hundred two thousand, seven hundred twenty-four".