20771474 has 16 divisors (see below), whose sum is σ = 31783200. Its totient is φ = 10178784.

The previous prime is 20771449. The next prime is 20771489. The reversal of 20771474 is 47417702.

It is a self number, because there is not a number n which added to its sum of digits gives 20771474.

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 7 ways as a sum of consecutive naturals, for example, 50582 + ... + 50990.

It is an arithmetic number, because the mean of its divisors is an integer number (1986450).

Almost surely, 2^20771474 is an apocalyptic number.

20771474 is a deficient number, since it is larger than the sum of its proper divisors (11011726).

20771474 is a wasteful number, since it uses less digits than its factorization.

20771474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 20771474 is about 4557.5732577766. The cubic root of 20771474 is about 274.8879940562.

The spelling of 20771474 in words is "twenty million, seven hundred seventy-one thousand, four hundred seventy-four".