3620240 has 60 divisors (see below), whose sum is σ = 9220764. Its totient is φ = 1314048.

The previous prime is 3620231. The next prime is 3620249. The reversal of 3620240 is 420263.

It is an interprime number because it is at equal distance from previous prime (3620231) and next prime (3620249).

It can be written as a sum of positive squares in 2 ways, for example, as 891136 + 2729104 = 944^2 + 1652^2 .

It is a super-2 number, since 2×3620240² = 26212275315200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61331 + ... + 61389.

Almost surely, 2^3620240 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 3620240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4610382).

3620240 is an abundant number, since it is smaller than the sum of its proper divisors (5600524).

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

3620240 is a wasteful number, since it uses less digits than its factorization.

3620240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 3620240 is about 1902.6928285985. The cubic root of 3620240 is about 153.5485740024.

The spelling of 3620240 in words is "three million, six hundred twenty thousand, two hundred forty".