8551920 has 80 divisors (see below), whose sum is σ = 28560672. Its totient is φ = 2104320.

The previous prime is 8551891. The next prime is 8551931. The reversal of 8551920 is 291558.

8551920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1750 + ... + 4490.

Almost surely, 2^8551920 is an apocalyptic number.

8551920 is a gapful number since it is divisible by the number (80) 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 8551920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14280336).

8551920 is an abundant number, since it is smaller than the sum of its proper divisors (20008752).

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

8551920 is a wasteful number, since it uses less digits than its factorization.

8551920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770 (or 2764 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 8551920 is about 2924.3665980858. The cubic root of 8551920 is about 204.4974404025.

It can be divided in two parts, 855 and 1920, that added together give a triangular number (2775 = T₇₄).

The spelling of 8551920 in words is "eight million, five hundred fifty-one thousand, nine hundred twenty".