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2628491 = 7137021
BaseRepresentation
bin1010000001101110001011
311221112121112
422001232023
51133102431
6132200535
731225145
oct12015613
94845545
102628491
111535908
12a6914b
13710528
144c5c95
1536dc2b
hex281b8b

2628491 has 4 divisors (see below), whose sum is σ = 2665584. Its totient is φ = 2591400.

The previous prime is 2628487. The next prime is 2628499. The reversal of 2628491 is 1948262.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2628491 - 22 = 2628487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2628499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18440 + ... + 18581.

It is an arithmetic number, because the mean of its divisors is an integer number (666396).

22628491 is an apocalyptic number.

2628491 is a deficient number, since it is larger than the sum of its proper divisors (37093).

2628491 is an equidigital number, since it uses as much as digits as its factorization.

2628491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37092.

The product of its digits is 6912, while the sum is 32.

The square root of 2628491 is about 1621.2621626375. The cubic root of 2628491 is about 138.0073335037.

The spelling of 2628491 in words is "two million, six hundred twenty-eight thousand, four hundred ninety-one".

Divisors: 1 71 37021 2628491