3551028 has 72 divisors (see below), whose sum is σ = 9592128. Its totient is φ = 1018368.

The previous prime is 3551027. The next prime is 3551029. The reversal of 3551028 is 8201553.

It is an interprime number because it is at equal distance from previous prime (3551027) and next prime (3551029).

It is a super-3 number, since 3×3551028³ (a number of 21 digits) contains 333 as substring.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 3550989 and 3551007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34425 + ... + 34527.

It is an arithmetic number, because the mean of its divisors is an integer number (133224).

Almost surely, 2^3551028 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 3551028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4796064).

3551028 is an abundant number, since it is smaller than the sum of its proper divisors (6041100).

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

3551028 is a wasteful number, since it uses less digits than its factorization.

3551028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 3551028 is about 1884.4171512699. The cubic root of 3551028 is about 152.5637536894.

The spelling of 3551028 in words is "three million, five hundred fifty-one thousand, twenty-eight".