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2798013 = 31783661
BaseRepresentation
bin1010101011000110111101
312021011011010
422223012331
51204014023
6135545433
732532321
oct12530675
95234133
102798013
111641209
12b2b279
1376c73a
1452b981
153a4093
hex2ab1bd

2798013 has 16 divisors (see below), whose sum is σ = 4003776. Its totient is φ = 1731840.

The previous prime is 2798011. The next prime is 2798023. The reversal of 2798013 is 3108972.

It is a happy number.

It is not a de Polignac number, because 2798013 - 21 = 2798011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2798011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3903 + ... + 4563.

It is an arithmetic number, because the mean of its divisors is an integer number (250236).

22798013 is an apocalyptic number.

It is an amenable number.

2798013 is a deficient number, since it is larger than the sum of its proper divisors (1205763).

2798013 is a wasteful number, since it uses less digits than its factorization.

2798013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2798013 is about 1672.7262178850. The cubic root of 2798013 is about 140.9126263169.

The spelling of 2798013 in words is "two million, seven hundred ninety-eight thousand, thirteen".

Divisors: 1 3 17 51 83 249 661 1411 1983 4233 11237 33711 54863 164589 932671 2798013