20730476 has 48 divisors (see below), whose sum is σ = 41277600. Its totient is φ = 9042432.

The previous prime is 20730439. The next prime is 20730481. The reversal of 20730476 is 67403702.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88856 + ... + 89088.

It is an arithmetic number, because the mean of its divisors is an integer number (859950).

Almost surely, 2^20730476 is an apocalyptic number.

20730476 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20730476 is a deficient number, since it is larger than the sum of its proper divisors (20547124).

20730476 is a wasteful number, since it uses less digits than its factorization.

20730476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 20730476 is about 4553.0732478184. The cubic root of 20730476 is about 274.7070202071.

The spelling of 20730476 in words is "twenty million, seven hundred thirty thousand, four hundred seventy-six".