20403896 has 16 divisors (see below), whose sum is σ = 39191040. Its totient is φ = 9952960.

The previous prime is 20403871. The next prime is 20403899. The reversal of 20403896 is 69830402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403899) 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, 30776 + ... + 31431.

It is an arithmetic number, because the mean of its divisors is an integer number (2449440).

Almost surely, 2^20403896 is an apocalyptic number.

It is an amenable number.

20403896 is a deficient number, since it is larger than the sum of its proper divisors (18787144).

20403896 is a wasteful number, since it uses less digits than its factorization.

20403896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62254 (or 62250 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 20403896 is about 4517.0671901135. The cubic root of 20403896 is about 273.2568349608.

The spelling of 20403896 in words is "twenty million, four hundred three thousand, eight hundred ninety-six".