13749630 has 32 divisors (see below), whose sum is σ = 34435584. Its totient is φ = 3506976.

The previous prime is 13749613. The next prime is 13749641. The reversal of 13749630 is 3694731.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13749591 and 13749600.

It is a congruent 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, 9274 + ... + 10653.

It is an arithmetic number, because the mean of its divisors is an integer number (1076112).

Almost surely, 2^13749630 is an apocalyptic number.

13749630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13749630 is an abundant number, since it is smaller than the sum of its proper divisors (20685954).

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

13749630 is a wasteful number, since it uses less digits than its factorization.

13749630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19960.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 13749630 is about 3708.0493524224. The cubic root of 13749630 is about 239.5688439547.

The spelling of 13749630 in words is "thirteen million, seven hundred forty-nine thousand, six hundred thirty".