13820770 has 32 divisors (see below), whose sum is σ = 25623360. Its totient is φ = 5365440.

The previous prime is 13820767. The next prime is 13820801. The reversal of 13820770 is 7702831.

It is a happy number.

13820770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84709 + ... + 84871.

It is an arithmetic number, because the mean of its divisors is an integer number (800730).

Almost surely, 2^13820770 is an apocalyptic number.

13820770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13820770 is a deficient number, since it is larger than the sum of its proper divisors (11802590).

13820770 is a wasteful number, since it uses less digits than its factorization.

13820770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 13820770 is about 3717.6296211430. The cubic root of 13820770 is about 239.9813064144.

The spelling of 13820770 in words is "thirteen million, eight hundred twenty thousand, seven hundred seventy".