3640276 has 6 divisors (see below), whose sum is σ = 6370490. Its totient is φ = 1820136.

The previous prime is 3640249. The next prime is 3640289. The reversal of 3640276 is 6720463.

It can be written as a sum of positive squares in only one way, i.e., 3610000 + 30276 = 1900^2 + 174^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455031 + ... + 455038.

Almost surely, 2^3640276 is an apocalyptic number.

It is an amenable number.

3640276 is a deficient number, since it is larger than the sum of its proper divisors (2730214).

3640276 is a wasteful number, since it uses less digits than its factorization.

3640276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910073 (or 910071 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 3640276 is about 1907.9507331166. The cubic root of 3640276 is about 153.8313214675.

It can be divided in two parts, 3640 and 276, that added together give a triangular number (3916 = T₈₈).

The spelling of 3640276 in words is "three million, six hundred forty thousand, two hundred seventy-six".