20703453 has 8 divisors (see below), whose sum is σ = 28192128. Its totient is φ = 13508544.

The previous prime is 20703439. The next prime is 20703479. The reversal of 20703453 is 35430702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20703453 - 2⁵ = 20703421 is a prime.

It is a super-2 number, since 2×20703453² = 857265932246418, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20703493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73276 + ... + 73557.

It is an arithmetic number, because the mean of its divisors is an integer number (3524016).

Almost surely, 2^20703453 is an apocalyptic number.

It is an amenable number.

20703453 is a deficient number, since it is larger than the sum of its proper divisors (7488675).

20703453 is a wasteful number, since it uses less digits than its factorization.

20703453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146883.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 20703453 is about 4550.1047240695. The cubic root of 20703453 is about 274.5876044620.

The spelling of 20703453 in words is "twenty million, seven hundred three thousand, four hundred fifty-three".