7782152220 has 96 divisors (see below), whose sum is σ = 25635355200. Its totient is φ = 1953165312.

The previous prime is 7782152219. The next prime is 7782152227. The reversal of 7782152220 is 222512877.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7782152227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414685 + ... + 433044.

It is an arithmetic number, because the mean of its divisors is an integer number (267034950).

Almost surely, 2^7782152220 is an apocalyptic number.

It is an amenable number.

7782152220 is an abundant number, since it is smaller than the sum of its proper divisors (17853202980).

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

7782152220 is a wasteful number, since it uses less digits than its factorization.

7782152220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847764 (or 847756 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 7782152220 is about 88216.5076388768. The cubic root of 7782152220 is about 1981.6786957313.

The spelling of 7782152220 in words is "seven billion, seven hundred eighty-two million, one hundred fifty-two thousand, two hundred twenty".