7788242 has 32 divisors (see below), whose sum is σ = 14736384. Its totient is φ = 2998800.

The previous prime is 7788199. The next prime is 7788247. The reversal of 7788242 is 2428877.

It is a junction number, because it is equal to n+sod(n) for n = 7788196 and 7788205.

It is not an unprimeable number, because it can be changed into a prime (7788247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15617 + ... + 16107.

It is an arithmetic number, because the mean of its divisors is an integer number (460512).

Almost surely, 2^7788242 is an apocalyptic number.

7788242 is a deficient number, since it is larger than the sum of its proper divisors (6948142).

7788242 is a wasteful number, since it uses less digits than its factorization.

7788242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614.

The product of its digits is 50176, while the sum is 38.

The square root of 7788242 is about 2790.7421951875. The cubic root of 7788242 is about 198.2195469688.

The spelling of 7788242 in words is "seven million, seven hundred eighty-eight thousand, two hundred forty-two".