13921752 has 32 divisors (see below), whose sum is σ = 37482480. Its totient is φ = 4283520.

The previous prime is 13921727. The next prime is 13921771. The reversal of 13921752 is 25712931.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 21999 + ... + 22622.

Almost surely, 2^13921752 is an apocalyptic number.

13921752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13921752 is an abundant number, since it is smaller than the sum of its proper divisors (23560728).

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

13921752 is a wasteful number, since it uses less digits than its factorization.

13921752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44643 (or 44639 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 13921752 is about 3731.1864064932. The cubic root of 13921752 is about 240.5643662821.

The spelling of 13921752 in words is "thirteen million, nine hundred twenty-one thousand, seven hundred fifty-two".