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2628930 = 23587631
BaseRepresentation
bin1010000001110101000010
311221120012210
422001311002
51133111210
6132202550
731226343
oct12016502
94846183
102628930
111536177
12a69456
137107a5
144c60ca
1536de20
hex281d42

2628930 has 16 divisors (see below), whose sum is σ = 6309504. Its totient is φ = 701040.

The previous prime is 2628919. The next prime is 2628953. The reversal of 2628930 is 398262.

It is a super-2 number, since 2×26289302 = 13822545889800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 87631 = 2628930 / (2 + 6 + 2 + 8 + 9 + 3 + 0).

It is a d-powerful number, because it can be written as 25 + 63 + 221 + 8 + 92 + 312 + 0 .

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, 43786 + ... + 43845.

It is an arithmetic number, because the mean of its divisors is an integer number (394344).

22628930 is an apocalyptic number.

2628930 is an abundant number, since it is smaller than the sum of its proper divisors (3680574).

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

2628930 is a wasteful number, since it uses less digits than its factorization.

2628930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87641.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 2628930 is about 1621.3975453293. The cubic root of 2628930 is about 138.0150162194.

The spelling of 2628930 in words is "two million, six hundred twenty-eight thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 87631 175262 262893 438155 525786 876310 1314465 2628930