20453912 has 8 divisors (see below), whose sum is σ = 38351100. Its totient is φ = 10226952.

The previous prime is 20453887. The next prime is 20453921. The reversal of 20453912 is 21935402.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20453912² = 836725032207488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278362 + ... + 1278377.

Almost surely, 2^20453912 is an apocalyptic number.

It is an amenable number.

20453912 is a deficient number, since it is larger than the sum of its proper divisors (17897188).

20453912 is a wasteful number, since it uses less digits than its factorization.

20453912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556745 (or 2556741 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 20453912 is about 4522.6001370893. The cubic root of 20453912 is about 273.4799306150.

The spelling of 20453912 in words is "twenty million, four hundred fifty-three thousand, nine hundred twelve".