13277820 has 48 divisors (see below), whose sum is σ = 38189088. Its totient is φ = 3444480.

The previous prime is 13277807. The next prime is 13277843. The reversal of 13277820 is 2877231.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771 + ... + 5210.

It is an arithmetic number, because the mean of its divisors is an integer number (795606).

Almost surely, 2^13277820 is an apocalyptic number.

13277820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13277820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19094544).

13277820 is an abundant number, since it is smaller than the sum of its proper divisors (24911268).

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

13277820 is a wasteful number, since it uses less digits than its factorization.

13277820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6030 (or 6028 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 13277820 is about 3643.8743117731. The cubic root of 13277820 is about 236.7966708428.

The spelling of 13277820 in words is "thirteen million, two hundred seventy-seven thousand, eight hundred twenty".