20347492 has 12 divisors (see below), whose sum is σ = 38845296. Its totient is φ = 9248840.

The previous prime is 20347469. The next prime is 20347511. The reversal of 20347492 is 29474302.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 231178 + ... + 231265.

It is an arithmetic number, because the mean of its divisors is an integer number (3237108).

Almost surely, 2^20347492 is an apocalyptic number.

20347492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20347492 is a deficient number, since it is larger than the sum of its proper divisors (18497804).

20347492 is a wasteful number, since it uses less digits than its factorization.

20347492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462458 (or 462456 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 20347492 is about 4510.8194377519. The cubic root of 20347492 is about 273.0048078872.

The spelling of 20347492 in words is "twenty million, three hundred forty-seven thousand, four hundred ninety-two".