3491028 has 18 divisors (see below), whose sum is σ = 8824634. Its totient is φ = 1163664.

The previous prime is 3491021. The next prime is 3491029. The reversal of 3491028 is 8201943.

It can be written as a sum of positive squares in only one way, i.e., 2022084 + 1468944 = 1422^2 + 1212^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 3490992 and 3491010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3491021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48451 + ... + 48522.

Almost surely, 2^3491028 is an apocalyptic number.

It is an amenable number.

3491028 is an abundant number, since it is smaller than the sum of its proper divisors (5333606).

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

3491028 is a wasteful number, since it uses less digits than its factorization.

3491028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96983 (or 96978 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 3491028 is about 1868.4292868610. The cubic root of 3491028 is about 151.6996029316.

Subtracting 3491028 from its reverse (8201943), we obtain a triangular number (4710915 = T₃₀₆₉).

The spelling of 3491028 in words is "three million, four hundred ninety-one thousand, twenty-eight".