3651040 has 48 divisors (see below), whose sum is σ = 9087120. Its totient is φ = 1382400.

The previous prime is 3651023. The next prime is 3651083. The reversal of 3651040 is 401563.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3650999 and 3651017.

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 in 7 ways as a sum of consecutive naturals, for example, 2440 + ... + 3640.

It is an arithmetic number, because the mean of its divisors is an integer number (189315).

Almost surely, 2^3651040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3651040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4543560).

3651040 is an abundant number, since it is smaller than the sum of its proper divisors (5436080).

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

3651040 is a wasteful number, since it uses less digits than its factorization.

3651040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 3651040 is about 1910.7694785086. The cubic root of 3651040 is about 153.9827945022.

It can be divided in two parts, 36 and 51040, that added together give a square (51076 = 226²).

The spelling of 3651040 in words is "three million, six hundred fifty-one thousand, forty".