13277720 has 16 divisors (see below), whose sum is σ = 29874960. Its totient is φ = 5311072.

The previous prime is 13277717. The next prime is 13277729. The reversal of 13277720 is 2777231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13277729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165932 + ... + 166011.

It is an arithmetic number, because the mean of its divisors is an integer number (1867185).

Almost surely, 2^13277720 is an apocalyptic number.

13277720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13277720 is an abundant number, since it is smaller than the sum of its proper divisors (16597240).

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

13277720 is a wasteful number, since it uses less digits than its factorization.

13277720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331954 (or 331950 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 13277720 is about 3643.8605900885. The cubic root of 13277720 is about 236.7960763746.

The spelling of 13277720 in words is "thirteen million, two hundred seventy-seven thousand, seven hundred twenty".