20967492 has 108 divisors (see below), whose sum is σ = 61918416. Its totient is φ = 5503680.

The previous prime is 20967487. The next prime is 20967497. The reversal of 20967492 is 29476902.

It is an interprime number because it is at equal distance from previous prime (20967487) and next prime (20967497).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 20967492.

It is not an unprimeable number, because it can be changed into a prime (20967497) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 99267 + ... + 99477.

Almost surely, 2^20967492 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 20967492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30959208).

20967492 is an abundant number, since it is smaller than the sum of its proper divisors (40950924).

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

20967492 is a wasteful number, since it uses less digits than its factorization.

20967492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 20967492 is about 4579.0274076489. The cubic root of 20967492 is about 275.7499836294.

The spelling of 20967492 in words is "twenty million, nine hundred sixty-seven thousand, four hundred ninety-two".