20383497 has 24 divisors (see below), whose sum is σ = 31262400. Its totient is φ = 12770208.

The previous prime is 20383471. The next prime is 20383507. The reversal of 20383497 is 79438302.

It is not a de Polignac number, because 20383497 - 2⁷ = 20383369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20383427) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11379 + ... + 13047.

It is an arithmetic number, because the mean of its divisors is an integer number (1302600).

Almost surely, 2^20383497 is an apocalyptic number.

It is an amenable number.

20383497 is a deficient number, since it is larger than the sum of its proper divisors (10878903).

20383497 is a wasteful number, since it uses less digits than its factorization.

20383497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757 (or 1754 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 20383497 is about 4514.8086338183. The cubic root of 20383497 is about 273.1657408414.

The spelling of 20383497 in words is "twenty million, three hundred eighty-three thousand, four hundred ninety-seven".