3398220 has 192 divisors, whose sum is σ = 12902400. Its totient is φ = 725760.

The previous prime is 3398209. The next prime is 3398221. The reversal of 3398220 is 228933.

3398220 = T₃₂₀ + T₃₂₁ + ... + T₃₇₅.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3398221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 109605 + ... + 109635.

It is an arithmetic number, because the mean of its divisors is an integer number (67200).

Almost surely, 2^3398220 is an apocalyptic number.

3398220 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 3398220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6451200).

3398220 is an abundant number, since it is smaller than the sum of its proper divisors (9504180).

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

3398220 is a wasteful number, since it uses less digits than its factorization.

3398220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3398220 is about 1843.4261580004. The cubic root of 3398220 is about 150.3432140949.

The spelling of 3398220 in words is "three million, three hundred ninety-eight thousand, two hundred twenty".