20746364 has 24 divisors (see below), whose sum is σ = 37325568. Its totient is φ = 10085040.

The previous prime is 20746351. The next prime is 20746367. The reversal of 20746364 is 46364702.

It is a self number, because there is not a number n which added to its sum of digits gives 20746364.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20746367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39407 + ... + 39929.

It is an arithmetic number, because the mean of its divisors is an integer number (1555232).

Almost surely, 2^20746364 is an apocalyptic number.

It is an amenable number.

20746364 is a deficient number, since it is larger than the sum of its proper divisors (16579204).

20746364 is a wasteful number, since it uses less digits than its factorization.

20746364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 20746364 is about 4554.8176692377. The cubic root of 20746364 is about 274.7771814937. Note that the first 3 decimals are identical.

The spelling of 20746364 in words is "twenty million, seven hundred forty-six thousand, three hundred sixty-four".