7961428 has 12 divisors (see below), whose sum is σ = 14413140. Its totient is φ = 3843392.

The previous prime is 7961417. The next prime is 7961441. The reversal of 7961428 is 8241697.

7961428 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5098564 + 2862864 = 2258^2 + 1692^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34201 + ... + 34432.

It is an arithmetic number, because the mean of its divisors is an integer number (1201095).

Almost surely, 2^7961428 is an apocalyptic number.

It is an amenable number.

7961428 is a deficient number, since it is larger than the sum of its proper divisors (6451712).

7961428 is a wasteful number, since it uses less digits than its factorization.

7961428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68666 (or 68664 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 7961428 is about 2821.6002551744. The cubic root of 7961428 is about 199.6780486815.

The spelling of 7961428 in words is "seven million, nine hundred sixty-one thousand, four hundred twenty-eight".