3650040 has 48 divisors (see below), whose sum is σ = 11863800. Its totient is φ = 973248.

The previous prime is 3649999. The next prime is 3650051. The reversal of 3650040 is 400563.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3649995 and 3650022.

It is a congruent number.

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, 4710 + ... + 5429.

Almost surely, 2^3650040 is an apocalyptic number.

3650040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3650040 is an abundant number, since it is smaller than the sum of its proper divisors (8213760).

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

3650040 is a wasteful number, since it uses less digits than its factorization.

3650040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10156 (or 10149 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 3650040 is about 1910.5077859041. The cubic root of 3650040 is about 153.9687348685.

The spelling of 3650040 in words is "three million, six hundred fifty thousand, forty".