2180428 has 12 divisors (see below), whose sum is σ = 3826312. Its totient is φ = 1087200.

The previous prime is 2180417. The next prime is 2180467. The reversal of 2180428 is 8240812.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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, 1951 + ... + 2857.

2^2180428 is an apocalyptic number.

It is an amenable number.

2180428 is a deficient number, since it is larger than the sum of its proper divisors (1645884).

2180428 is a wasteful number, since it uses less digits than its factorization.

2180428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 2180428 is about 1476.6272379988. The cubic root of 2180428 is about 129.6723107870.

The spelling of 2180428 in words is "two million, one hundred eighty thousand, four hundred twenty-eight".