13921450 has 24 divisors (see below), whose sum is σ = 26789580. Its totient is φ = 5376000.

The previous prime is 13921429. The next prime is 13921451. The reversal of 13921450 is 5412931.

13921450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 7177041 + 6744409 = 2679^2 + 2597^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (13921451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3351 + ... + 6250.

Almost surely, 2^13921450 is an apocalyptic number.

13921450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13921450 is a deficient number, since it is larger than the sum of its proper divisors (12868130).

13921450 is a wasteful number, since it uses less digits than its factorization.

13921450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9642 (or 9637 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 13921450 is about 3731.1459365723. The cubic root of 13921450 is about 240.5626267749.

The spelling of 13921450 in words is "thirteen million, nine hundred twenty-one thousand, four hundred fifty".