20453896 has 32 divisors (see below), whose sum is σ = 40328640. Its totient is φ = 9713088.

The previous prime is 20453887. The next prime is 20453921. The reversal of 20453896 is 69835402.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11925 + ... + 13531.

It is an arithmetic number, because the mean of its divisors is an integer number (1260270).

Almost surely, 2^20453896 is an apocalyptic number.

It is an amenable number.

20453896 is a deficient number, since it is larger than the sum of its proper divisors (19874744).

20453896 is a wasteful number, since it uses less digits than its factorization.

20453896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693 (or 1689 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 20453896 is about 4522.5983681950. The cubic root of 20453896 is about 273.4798593054.

The spelling of 20453896 in words is "twenty million, four hundred fifty-three thousand, eight hundred ninety-six".