20730675 has 36 divisors (see below), whose sum is σ = 39877656. Its totient is φ = 9475200.

The previous prime is 20730623. The next prime is 20730719. The reversal of 20730675 is 57603702.

It is not a de Polignac number, because 20730675 - 2¹² = 20726579 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 855 + ... + 6495.

Almost surely, 2^20730675 is an apocalyptic number.

20730675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20730675 is a deficient number, since it is larger than the sum of its proper divisors (19146981).

20730675 is a wasteful number, since it uses less digits than its factorization.

20730675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5668 (or 5656 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 20730675 is about 4553.0951011372. The cubic root of 20730675 is about 274.7078992113.

The spelling of 20730675 in words is "twenty million, seven hundred thirty thousand, six hundred seventy-five".