2638020 has 96 divisors (see below), whose sum is σ = 9225216. Its totient is φ = 547200.

The previous prime is 2638003. The next prime is 2638039. The reversal of 2638020 is 208362.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 4335 + ... + 4905.

It is an arithmetic number, because the mean of its divisors is an integer number (96096).

2^2638020 is an apocalyptic number.

2638020 is a gapful number since it is divisible by the number (20) 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 2638020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4612608).

2638020 is an abundant number, since it is smaller than the sum of its proper divisors (6587196).

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

2638020 is a wasteful number, since it uses less digits than its factorization.

2638020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2638020 is about 1624.1982637597. The cubic root of 2638020 is about 138.1739038424.

The spelling of 2638020 in words is "two million, six hundred thirty-eight thousand, twenty".