7776072 has 48 divisors (see below), whose sum is σ = 22302540. Its totient is φ = 2439168.

The previous prime is 7776061. The next prime is 7776079. The reversal of 7776072 is 2706777.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7650756 + 125316 = 2766^2 + 354^2 .

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 (7776079) 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, 1953 + ... + 4400.

Almost surely, 2^7776072 is an apocalyptic number.

7776072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7776072 is an abundant number, since it is smaller than the sum of its proper divisors (14526468).

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

7776072 is a wasteful number, since it uses less digits than its factorization.

7776072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6382 (or 6375 counting only the distinct ones).

The product of its (nonzero) digits is 28812, while the sum is 36.

The square root of 7776072 is about 2788.5609191839. The cubic root of 7776072 is about 198.1162463998.

The spelling of 7776072 in words is "seven million, seven hundred seventy-six thousand, seventy-two".