20678592 has 56 divisors (see below), whose sum is σ = 59692032. Its totient is φ = 6265600.

The previous prime is 20678591. The next prime is 20678629. The reversal of 20678592 is 29587602.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20678592.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20678591) 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, 2784 + ... + 7007.

Almost surely, 2^20678592 is an apocalyptic number.

20678592 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20678592 is an abundant number, since it is smaller than the sum of its proper divisors (39013440).

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

20678592 is a wasteful number, since it uses less digits than its factorization.

20678592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9817 (or 9807 counting only the distinct ones).

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

The square root of 20678592 is about 4547.3719883027. The cubic root of 20678592 is about 274.4776508757.

The spelling of 20678592 in words is "twenty million, six hundred seventy-eight thousand, five hundred ninety-two".