3639276 has 48 divisors (see below), whose sum is σ = 9748480. Its totient is φ = 1172880.

The previous prime is 3639217. The next prime is 3639277. The reversal of 3639276 is 6729363.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3639276.

It is not an unprimeable number, because it can be changed into a prime (3639277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2805 + ... + 3891.

Almost surely, 2^3639276 is an apocalyptic number.

3639276 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3639276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4874240).

3639276 is an abundant number, since it is smaller than the sum of its proper divisors (6109204).

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

3639276 is a wasteful number, since it uses less digits than its factorization.

3639276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131 (or 1123 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 3639276 is about 1907.6886538427. The cubic root of 3639276 is about 153.8172341282.

The spelling of 3639276 in words is "three million, six hundred thirty-nine thousand, two hundred seventy-six".