13977530 has 16 divisors (see below), whose sum is σ = 28753920. Its totient is φ = 4792272.

The previous prime is 13977503. The next prime is 13977533. The reversal of 13977530 is 3577931.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (13977533) 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, 99770 + ... + 99909.

It is an arithmetic number, because the mean of its divisors is an integer number (1797120).

Almost surely, 2^13977530 is an apocalyptic number.

13977530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13977530 is an abundant number, since it is smaller than the sum of its proper divisors (14776390).

13977530 is a wasteful number, since it uses less digits than its factorization.

13977530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199693.

The product of its (nonzero) digits is 19845, while the sum is 35.

The square root of 13977530 is about 3738.6535009278. The cubic root of 13977530 is about 240.8852147605.

The spelling of 13977530 in words is "thirteen million, nine hundred seventy-seven thousand, five hundred thirty".