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BaseRepresentation
bin1000101101000010010100
311021220210110
420231002110
51041002440
6120523020
725251645
oct10550224
94256713
102281620
111319240
12920470
1361b693
144356cc
15301080
hex22d094

2281620 has 48 divisors (see below), whose sum is σ = 6971328. Its totient is φ = 552960.

The previous prime is 2281619. The next prime is 2281651. The reversal of 2281620 is 261822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1069 + ... + 2388.

It is an arithmetic number, because the mean of its divisors is an integer number (145236).

22281620 is an apocalyptic number.

2281620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2281620 is an abundant number, since it is smaller than the sum of its proper divisors (4689708).

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

2281620 is a wasteful number, since it uses less digits than its factorization.

2281620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480 (or 3478 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 2281620 is about 1510.5032274047. The cubic root of 2281620 is about 131.6480523455.

The spelling of 2281620 in words is "two million, two hundred eighty-one thousand, six hundred twenty".