2803264 has 14 divisors (see below), whose sum is σ = 5562854. Its totient is φ = 1401600.

The previous prime is 2803259. The next prime is 2803291. The reversal of 2803264 is 4623082.

2803264 = T₁₄₂ + T₁₄₃ + ... + T₂₆₉.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2433600 + 369664 = 1560^2 + 608^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21837 + ... + 21964.

2^2803264 is an apocalyptic number.

It is an amenable number.

2803264 is a deficient number, since it is larger than the sum of its proper divisors (2759590).

2803264 is an equidigital number, since it uses as much as digits as its factorization.

2803264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43813 (or 43803 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2803264 is about 1674.2950755467. The cubic root of 2803264 is about 141.0007209527. Note that the first 3 decimals are identical.

It can be divided in two parts, 2 and 803264, that multiplied together give a triangular number (1606528 = T₁₇₉₂).

The spelling of 2803264 in words is "two million, eight hundred three thousand, two hundred sixty-four".