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2893989 = 37219687
BaseRepresentation
bin1011000010100010100101
312110000210210
423002202211
51220101424
6142010033
733412200
oct13024245
95400723
102893989
1116a732a
12b76919
137a4327
14554937
153c2729
hex2c28a5

2893989 has 12 divisors (see below), whose sum is σ = 4488864. Its totient is φ = 1653624.

The previous prime is 2893987. The next prime is 2893993. The reversal of 2893989 is 9893982.

2893989 = 1212 + 1222 + ... + 2182.

It is not a de Polignac number, because 2893989 - 21 = 2893987 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2893987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9697 + ... + 9990.

It is an arithmetic number, because the mean of its divisors is an integer number (374072).

22893989 is an apocalyptic number.

It is an amenable number.

2893989 is a deficient number, since it is larger than the sum of its proper divisors (1594875).

2893989 is a wasteful number, since it uses less digits than its factorization.

2893989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19704 (or 19697 counting only the distinct ones).

The product of its digits is 279936, while the sum is 48.

The square root of 2893989 is about 1701.1728307259. The cubic root of 2893989 is about 142.5057184532.

It can be divided in two parts, 289 and 3989, that added together give a triangular number (4278 = T92).

The spelling of 2893989 in words is "two million, eight hundred ninety-three thousand, nine hundred eighty-nine".

Divisors: 1 3 7 21 49 147 19687 59061 137809 413427 964663 2893989