20564462 has 4 divisors (see below), whose sum is σ = 30846696. Its totient is φ = 10282230.

The previous prime is 20564459. The next prime is 20564473. The reversal of 20564462 is 26446502.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5141114 + ... + 5141117.

It is an arithmetic number, because the mean of its divisors is an integer number (7711674).

Almost surely, 2^20564462 is an apocalyptic number.

20564462 is a deficient number, since it is larger than the sum of its proper divisors (10282234).

20564462 is a wasteful number, since it uses less digits than its factorization.

20564462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10282233.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 20564462 is about 4534.8056187669. The cubic root of 20564462 is about 273.9717501555.

The spelling of 20564462 in words is "twenty million, five hundred sixty-four thousand, four hundred sixty-two".