3550428 has 72 divisors (see below), whose sum is σ = 10451168. Its totient is φ = 995328.

The previous prime is 3550411. The next prime is 3550439. The reversal of 3550428 is 8240553.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18300 + ... + 18492.

Almost surely, 2^3550428 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 3550428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5225584).

3550428 is an abundant number, since it is smaller than the sum of its proper divisors (6900740).

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

3550428 is a wasteful number, since it uses less digits than its factorization.

3550428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 3550428 is about 1884.2579441255. The cubic root of 3550428 is about 152.5551605526. Note that the first 3 decimals are identical.

The spelling of 3550428 in words is "three million, five hundred fifty thousand, four hundred twenty-eight".