20927492 has 12 divisors (see below), whose sum is σ = 36669696. Its totient is φ = 10450440.

The previous prime is 20927479. The next prime is 20927513. The reversal of 20927492 is 29472902.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773 + ... + 6515.

It is an arithmetic number, because the mean of its divisors is an integer number (3055808).

Almost surely, 2^20927492 is an apocalyptic number.

It is an amenable number.

20927492 is a deficient number, since it is larger than the sum of its proper divisors (15742204).

20927492 is a wasteful number, since it uses less digits than its factorization.

20927492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6658 (or 6656 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20927492 is about 4574.6575828143. The cubic root of 20927492 is about 275.5745212069.

The spelling of 20927492 in words is "twenty million, nine hundred twenty-seven thousand, four hundred ninety-two".