20493914 has 16 divisors (see below), whose sum is σ = 36266496. Its totient is φ = 8499600.

The previous prime is 20493911. The next prime is 20493919. The reversal of 20493914 is 41939402.

It is a happy number.

It is a super-2 number, since 2×20493914² = 840001022078792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20493911) by changing a digit.

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, 23177 + ... + 24044.

It is an arithmetic number, because the mean of its divisors is an integer number (2266656).

Almost surely, 2^20493914 is an apocalyptic number.

20493914 is a deficient number, since it is larger than the sum of its proper divisors (15772582).

20493914 is a wasteful number, since it uses less digits than its factorization.

20493914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47261.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 20493914 is about 4527.0204329117. The cubic root of 20493914 is about 273.6580973515.

The spelling of 20493914 in words is "twenty million, four hundred ninety-three thousand, nine hundred fourteen".