13402623 has 16 divisors (see below), whose sum is σ = 19315296. Its totient is φ = 8217600.

The previous prime is 13402607. The next prime is 13402637. The reversal of 13402623 is 32620431.

It is a happy number.

It is not a de Polignac number, because 13402623 - 2⁴ = 13402607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13402623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13402603) 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, 15211 + ... + 16067.

It is an arithmetic number, because the mean of its divisors is an integer number (1207206).

Almost surely, 2^13402623 is an apocalyptic number.

13402623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13402623 is a deficient number, since it is larger than the sum of its proper divisors (5912673).

13402623 is a wasteful number, since it uses less digits than its factorization.

13402623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 13402623 is about 3660.9593005113. The cubic root of 13402623 is about 237.5362707301.

The spelling of 13402623 in words is "thirteen million, four hundred two thousand, six hundred twenty-three".