20678952 has 64 divisors (see below), whose sum is σ = 59834880. Its totient is φ = 5833152.

The previous prime is 20678951. The next prime is 20678981. The reversal of 20678952 is 25987602.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20678952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20678951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13203 + ... + 14685.

It is an arithmetic number, because the mean of its divisors is an integer number (934920).

Almost surely, 2^20678952 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 20678952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29917440).

20678952 is an abundant number, since it is smaller than the sum of its proper divisors (39155928).

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

20678952 is a wasteful number, since it uses less digits than its factorization.

20678952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582 (or 1578 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 20678952 is about 4547.4115714327. The cubic root of 20678952 is about 274.4792436885.

The spelling of 20678952 in words is "twenty million, six hundred seventy-eight thousand, nine hundred fifty-two".