2861428 has 6 divisors (see below), whose sum is σ = 5007506. Its totient is φ = 1430712.

The previous prime is 2861399. The next prime is 2861447. The reversal of 2861428 is 8241682.

It can be written as a sum of positive squares in only one way, i.e., 2396304 + 465124 = 1548^2 + 682^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2861428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357675 + ... + 357682.

2^2861428 is an apocalyptic number.

It is an amenable number.

2861428 is a deficient number, since it is larger than the sum of its proper divisors (2146078).

2861428 is a wasteful number, since it uses less digits than its factorization.

2861428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715361 (or 715359 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 2861428 is about 1691.5755968918. The cubic root of 2861428 is about 141.9692454721.

The spelling of 2861428 in words is "two million, eight hundred sixty-one thousand, four hundred twenty-eight".