14920813 has 4 divisors (see below), whose sum is σ = 15569568. Its totient is φ = 14272060.

The previous prime is 14920811. The next prime is 14920817. The reversal of 14920813 is 31802941.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31802941 = 19 ⋅1673839.

It is a cyclic number.

It is not a de Polignac number, because 14920813 - 2¹ = 14920811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14920811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324343 + ... + 324388.

It is an arithmetic number, because the mean of its divisors is an integer number (3892392).

Almost surely, 2^14920813 is an apocalyptic number.

It is an amenable number.

14920813 is a deficient number, since it is larger than the sum of its proper divisors (648755).

14920813 is an equidigital number, since it uses as much as digits as its factorization.

14920813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648754.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 14920813 is about 3862.7468205928. The cubic root of 14920813 is about 246.1864594233.

The spelling of 14920813 in words is "fourteen million, nine hundred twenty thousand, eight hundred thirteen".