3540620 has 48 divisors (see below), whose sum is σ = 7983360. Its totient is φ = 1315776.

The previous prime is 3540619. The next prime is 3540661. The reversal of 3540620 is 260453.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3540592 and 3540601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19691 + ... + 19869.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

Almost surely, 2^3540620 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 3540620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3991680).

3540620 is an abundant number, since it is smaller than the sum of its proper divisors (4442740).

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

3540620 is a wasteful number, since it uses less digits than its factorization.

3540620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3540620 is about 1881.6535281502. The cubic root of 3540620 is about 152.4145539429.

The spelling of 3540620 in words is "three million, five hundred forty thousand, six hundred twenty".