20894692 has 48 divisors (see below), whose sum is σ = 45440640. Its totient is φ = 8186112.

The previous prime is 20894681. The next prime is 20894693. The reversal of 20894692 is 29649802.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20894693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49659 + ... + 50077.

It is an arithmetic number, because the mean of its divisors is an integer number (946680).

Almost surely, 2^20894692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20894692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22720320).

20894692 is an abundant number, since it is smaller than the sum of its proper divisors (24545948).

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

20894692 is a wasteful number, since it uses less digits than its factorization.

20894692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 20894692 is about 4571.0712092463. The cubic root of 20894692 is about 275.4304751094.

The spelling of 20894692 in words is "twenty million, eight hundred ninety-four thousand, six hundred ninety-two".