920884860 has 144 divisors (see below), whose sum is σ = 3278847936. Its totient is φ = 204788736.

The previous prime is 920884847. The next prime is 920884889. The reversal of 920884860 is 68488029.

It is a happy number.

920884860 is a `hidden beast` number, since 92 + 0 + 88 + 486 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36744 + ... + 56496.

Almost surely, 2^920884860 is an apocalyptic number.

920884860 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 920884860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1639423968).

920884860 is an abundant number, since it is smaller than the sum of its proper divisors (2357963076).

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

920884860 is a wasteful number, since it uses less digits than its factorization.

920884860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19812 (or 19807 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 920884860 is about 30346.0847556979. The cubic root of 920884860 is about 972.9005396916.

The spelling of 920884860 in words is "nine hundred twenty million, eight hundred eighty-four thousand, eight hundred sixty".