3550140 has 108 divisors (see below), whose sum is σ = 11909352. Its totient is φ = 855360.

The previous prime is 3550111. The next prime is 3550163. The reversal of 3550140 is 410553.

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

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 35 ways as a sum of consecutive naturals, for example, 21699 + ... + 21861.

Almost surely, 2^3550140 is an apocalyptic number.

3550140 is a gapful number since it is divisible by the number (30) 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 3550140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5954676).

3550140 is an abundant number, since it is smaller than the sum of its proper divisors (8359212).

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

3550140 is a wasteful number, since it uses less digits than its factorization.

3550140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 3550140 is about 1884.1815199179. The cubic root of 3550140 is about 152.5510355030.

Adding to 3550140 its reverse (410553), we get a palindrome (3960693).

The spelling of 3550140 in words is "three million, five hundred fifty thousand, one hundred forty".