8120772 has 36 divisors (see below), whose sum is σ = 22394736. Its totient is φ = 2460720.

The previous prime is 8120759. The next prime is 8120773. The reversal of 8120772 is 2770218.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (8120773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9858 + ... + 10649.

It is an arithmetic number, because the mean of its divisors is an integer number (622076).

Almost surely, 2^8120772 is an apocalyptic number.

It is an amenable number.

8120772 is an abundant number, since it is smaller than the sum of its proper divisors (14273964).

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

8120772 is a wasteful number, since it uses less digits than its factorization.

8120772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20528 (or 20523 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 8120772 is about 2849.6968259799. The cubic root of 8120772 is about 201.0014108463.

The spelling of 8120772 in words is "eight million, one hundred twenty thousand, seven hundred seventy-two".