20730454 has 8 divisors (see below), whose sum is σ = 31232160. Its totient is φ = 10319736.

The previous prime is 20730439. The next prime is 20730481. The reversal of 20730454 is 45403702.

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

It is a super-2 number, since 2×20730454² = 859503446092232, 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 in 3 ways as a sum of consecutive naturals, for example, 22174 + ... + 23089.

It is an arithmetic number, because the mean of its divisors is an integer number (3904020).

Almost surely, 2^20730454 is an apocalyptic number.

20730454 is a deficient number, since it is larger than the sum of its proper divisors (10501706).

20730454 is a wasteful number, since it uses less digits than its factorization.

20730454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45494.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 20730454 is about 4553.0708318672. The cubic root of 20730454 is about 274.7069230304.

The spelling of 20730454 in words is "twenty million, seven hundred thirty thousand, four hundred fifty-four".