2177428 has 48 divisors (see below), whose sum is σ = 4572288. Its totient is φ = 896000.

The previous prime is 2177401. The next prime is 2177429. The reversal of 2177428 is 8247712.

2177428 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2177428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2177429) 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, 30633 + ... + 30703.

It is an arithmetic number, because the mean of its divisors is an integer number (95256).

2^2177428 is an apocalyptic number.

It is an amenable number.

2177428 is an abundant number, since it is smaller than the sum of its proper divisors (2394860).

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

2177428 is a wasteful number, since it uses less digits than its factorization.

2177428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 142 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 2177428 is about 1475.6110598664. The cubic root of 2177428 is about 129.6128124558.

The spelling of 2177428 in words is "two million, one hundred seventy-seven thousand, four hundred twenty-eight".