20730462 has 8 divisors (see below), whose sum is σ = 41460936. Its totient is φ = 6910152.

The previous prime is 20730439. The next prime is 20730481. The reversal of 20730462 is 26403702.

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

20730462 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1727533 + ... + 1727544.

It is an arithmetic number, because the mean of its divisors is an integer number (5182617).

Almost surely, 2^20730462 is an apocalyptic number.

20730462 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20730462 is a wasteful number, since it uses less digits than its factorization.

20730462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3455082.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20730462 is about 4553.0717103951. The cubic root of 20730462 is about 274.7069583674.

The spelling of 20730462 in words is "twenty million, seven hundred thirty thousand, four hundred sixty-two".