2780432 has 10 divisors (see below), whose sum is σ = 5387118. Its totient is φ = 1390208.

The previous prime is 2780419. The next prime is 2780443. The reversal of 2780432 is 2340872.

It can be written as a sum of positive squares in only one way, i.e., 1731856 + 1048576 = 1316^2 + 1024^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86873 + ... + 86904.

2^2780432 is an apocalyptic number.

It is an amenable number.

2780432 is a deficient number, since it is larger than the sum of its proper divisors (2606686).

2780432 is a wasteful number, since it uses less digits than its factorization.

2780432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173785 (or 173779 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 2780432 is about 1667.4627432120. The cubic root of 2780432 is about 140.6168697851.

The spelling of 2780432 in words is "two million, seven hundred eighty thousand, four hundred thirty-two".