8398620 has 96 divisors (see below), whose sum is σ = 26557440. Its totient is φ = 2203200.

The previous prime is 8398619. The next prime is 8398633. The reversal of 8398620 is 268938.

8398620 = 233² + 234² + ... + 335².

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55545 + ... + 55695.

It is an arithmetic number, because the mean of its divisors is an integer number (276640).

Almost surely, 2^8398620 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 8398620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13278720).

8398620 is an abundant number, since it is smaller than the sum of its proper divisors (18158820).

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

8398620 is a wasteful number, since it uses less digits than its factorization.

8398620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 8398620 is about 2898.0372668411. The cubic root of 8398620 is about 203.2681387932.

Adding to 8398620 its product of nonzero digits (20736), we get a triangular number (8419356 = T₄₁₀₃).

The spelling of 8398620 in words is "eight million, three hundred ninety-eight thousand, six hundred twenty".