13655730 has 32 divisors (see below), whose sum is σ = 35754048. Its totient is φ = 3310400.

The previous prime is 13655729. The next prime is 13655753. The reversal of 13655730 is 3755631.

13655730 = T₆₇₇ + T₆₇₈ + ... + T₇₃₁.

13655730 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

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, 20361 + ... + 21020.

It is an arithmetic number, because the mean of its divisors is an integer number (1117314).

Almost surely, 2^13655730 is an apocalyptic number.

13655730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13655730 is an abundant number, since it is smaller than the sum of its proper divisors (22098318).

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

13655730 is a wasteful number, since it uses less digits than its factorization.

13655730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41402.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 13655730 is about 3695.3660170543. The cubic root of 13655730 is about 239.0222372708.

Subtracting from 13655730 its reverse (3755631), we obtain a palindrome (9900099).

The spelling of 13655730 in words is "thirteen million, six hundred fifty-five thousand, seven hundred thirty".