3721284 has 36 divisors (see below), whose sum is σ = 10751104. Its totient is φ = 1063152.

The previous prime is 3721279. The next prime is 3721297. The reversal of 3721284 is 4821273.

3721284 = 8² + 9² + ... + 223².

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7132 + ... + 7635.

Almost surely, 2^3721284 is an apocalyptic number.

It is an amenable number.

3721284 is an abundant number, since it is smaller than the sum of its proper divisors (7029820).

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

3721284 is a wasteful number, since it uses less digits than its factorization.

3721284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14784 (or 14779 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 3721284 is about 1929.0629849748. The cubic root of 3721284 is about 154.9640429947.

It can be divided in two parts, 3721 and 284, that added together give a triangular number (4005 = T₈₉).

The spelling of 3721284 in words is "three million, seven hundred twenty-one thousand, two hundred eighty-four".