13921754 has 16 divisors (see below), whose sum is σ = 26035776. Its totient is φ = 5424000.

The previous prime is 13921727. The next prime is 13921771. The reversal of 13921754 is 45712931.

It is a self number, because there is not a number n which added to its sum of digits gives 13921754.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45047 + ... + 45354.

It is an arithmetic number, because the mean of its divisors is an integer number (1627236).

Almost surely, 2^13921754 is an apocalyptic number.

13921754 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13921754 is a deficient number, since it is larger than the sum of its proper divisors (12114022).

13921754 is a wasteful number, since it uses less digits than its factorization.

13921754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90421.

The product of its digits is 7560, while the sum is 32.

The square root of 13921754 is about 3731.1866745045. The cubic root of 13921754 is about 240.5643778019.

The spelling of 13921754 in words is "thirteen million, nine hundred twenty-one thousand, seven hundred fifty-four".