13123870 has 16 divisors (see below), whose sum is σ = 24866640. Its totient is φ = 4973184.

The previous prime is 13123861. The next prime is 13123879. The reversal of 13123870 is 7832131.

It is an interprime number because it is at equal distance from previous prime (13123861) and next prime (13123879).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34347 + ... + 34726.

It is an arithmetic number, because the mean of its divisors is an integer number (1554165).

Almost surely, 2^13123870 is an apocalyptic number.

13123870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13123870 is a deficient number, since it is larger than the sum of its proper divisors (11742770).

13123870 is a wasteful number, since it uses less digits than its factorization.

13123870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69099.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 13123870 is about 3622.6882283741. The cubic root of 13123870 is about 235.8779293051.

The spelling of 13123870 in words is "thirteen million, one hundred twenty-three thousand, eight hundred seventy".