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2752981 = 71135753
BaseRepresentation
bin1010100000000111010101
312011212101021
422200013111
51201043411
6135001141
732254120
oct12400725
95155337
102752981
1116103a0
12b091b1
137550aa
145193b7
15395a71
hex2a01d5

2752981 has 8 divisors (see below), whose sum is σ = 3432384. Its totient is φ = 2145120.

The previous prime is 2752961. The next prime is 2752987. The reversal of 2752981 is 1892572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2752981 - 211 = 2750933 is a prime.

It is a super-2 number, since 2×27529812 = 15157808772722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2752987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17800 + ... + 17953.

It is an arithmetic number, because the mean of its divisors is an integer number (429048).

22752981 is an apocalyptic number.

It is an amenable number.

2752981 is a deficient number, since it is larger than the sum of its proper divisors (679403).

2752981 is a wasteful number, since it uses less digits than its factorization.

2752981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35771.

The product of its digits is 10080, while the sum is 34.

The square root of 2752981 is about 1659.2109570516. The cubic root of 2752981 is about 140.1525717624.

The spelling of 2752981 in words is "two million, seven hundred fifty-two thousand, nine hundred eighty-one".

Divisors: 1 7 11 77 35753 250271 393283 2752981