20790454 has 8 divisors (see below), whose sum is σ = 31221648. Its totient is φ = 10383240.

The previous prime is 20790443. The next prime is 20790461. The reversal of 20790454 is 45409702.

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

It is a super-2 number, since 2×20790454² = 864485955052232, 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, 3642 + ... + 7405.

It is an arithmetic number, because the mean of its divisors is an integer number (3902706).

Almost surely, 2^20790454 is an apocalyptic number.

20790454 is a deficient number, since it is larger than the sum of its proper divisors (10431194).

20790454 is a wasteful number, since it uses less digits than its factorization.

20790454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11990.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20790454 is about 4559.6550308110. The cubic root of 20790454 is about 274.9716951584.

The spelling of 20790454 in words is "twenty million, seven hundred ninety thousand, four hundred fifty-four".