13790220 has 24 divisors (see below), whose sum is σ = 38612784. Its totient is φ = 3677376.

The previous prime is 13790207. The next prime is 13790243. The reversal of 13790220 is 2209731.

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, 114859 + ... + 114978.

It is an arithmetic number, because the mean of its divisors is an integer number (1608866).

Almost surely, 2^13790220 is an apocalyptic number.

13790220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13790220 is an abundant number, since it is smaller than the sum of its proper divisors (24822564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13790220 is a wasteful number, since it uses less digits than its factorization.

13790220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229849 (or 229847 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 13790220 is about 3713.5185471464. The cubic root of 13790220 is about 239.8043544440.

Adding to 13790220 its reverse (2209731), we get a palindrome (15999951).

The spelling of 13790220 in words is "thirteen million, seven hundred ninety thousand, two hundred twenty".