3428520 has 32 divisors (see below), whose sum is σ = 10285920. Its totient is φ = 914240.

The previous prime is 3428501. The next prime is 3428563. The reversal of 3428520 is 258243.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14166 + ... + 14405.

It is an arithmetic number, because the mean of its divisors is an integer number (321435).

Almost surely, 2^3428520 is an apocalyptic number.

3428520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3428520 is an abundant number, since it is smaller than the sum of its proper divisors (6857400).

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

3428520 is a wasteful number, since it uses less digits than its factorization.

3428520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28585 (or 28581 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 3428520 is about 1851.6263121915. The cubic root of 3428520 is about 150.7887342746.

The spelling of 3428520 in words is "three million, four hundred twenty-eight thousand, five hundred twenty".