20359768 has 72 divisors (see below), whose sum is σ = 46346580. Its totient is φ = 8311680.

The previous prime is 20359723. The next prime is 20359771. The reversal of 20359768 is 86795302.

It is a self number, because there is not a number n which added to its sum of digits gives 20359768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 550246 + ... + 550282.

Almost surely, 2^20359768 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 20359768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23173290).

20359768 is an abundant number, since it is smaller than the sum of its proper divisors (25986812).

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

20359768 is a wasteful number, since it uses less digits than its factorization.

20359768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 20359768 is about 4512.1799609501. The cubic root of 20359768 is about 273.0596997179.

The spelling of 20359768 in words is "twenty million, three hundred fifty-nine thousand, seven hundred sixty-eight".