2840928 has 48 divisors (see below), whose sum is σ = 7556976. Its totient is φ = 934400.

The previous prime is 2840917. The next prime is 2840939. The reversal of 2840928 is 8290482.

It is an interprime number because it is at equal distance from previous prime (2840917) and next prime (2840939).

It is a tau number, because it is divible by the number of its divisors (48).

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, 9550 + ... + 9842.

It is an arithmetic number, because the mean of its divisors is an integer number (157437).

2^2840928 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 2840928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3778488).

2840928 is an abundant number, since it is smaller than the sum of its proper divisors (4716048).

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

2840928 is a wasteful number, since it uses less digits than its factorization.

2840928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 2840928 is about 1685.5052654916. The cubic root of 2840928 is about 141.6293979627.

The spelling of 2840928 in words is "two million, eight hundred forty thousand, nine hundred twenty-eight".