2391428 has 12 divisors (see below), whose sum is σ = 4507020. Its totient is φ = 1103712.

The previous prime is 2391401. The next prime is 2391437. The reversal of 2391428 is 8241932.

It can be written as a sum of positive squares in 2 ways, for example, as 135424 + 2256004 = 368^2 + 1502^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2391428.

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, 22943 + ... + 23046.

It is an arithmetic number, because the mean of its divisors is an integer number (375585).

2^2391428 is an apocalyptic number.

It is an amenable number.

2391428 is a deficient number, since it is larger than the sum of its proper divisors (2115592).

2391428 is a wasteful number, since it uses less digits than its factorization.

2391428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46006 (or 46004 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 2391428 is about 1546.4242626136. The cubic root of 2391428 is about 133.7270004415.

The spelling of 2391428 in words is "two million, three hundred ninety-one thousand, four hundred twenty-eight".