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2847972 = 223237331
BaseRepresentation
bin1010110111010011100100
312100200200110
422313103210
51212113342
6141013020
733131061
oct12672344
95320613
102847972
1116757a6
12b54170
137893ba
14541c68
153b3c9c
hex2b74e4

2847972 has 12 divisors (see below), whose sum is σ = 6645296. Its totient is φ = 949320.

The previous prime is 2847961. The next prime is 2847973. The reversal of 2847972 is 2797482.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×28479722 = 16221889025568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2847972.

It is not an unprimeable number, because it can be changed into a prime (2847973) 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, 118654 + ... + 118677.

22847972 is an apocalyptic number.

It is an amenable number.

2847972 is an abundant number, since it is smaller than the sum of its proper divisors (3797324).

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

2847972 is a wasteful number, since it uses less digits than its factorization.

2847972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237338 (or 237336 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 2847972 is about 1687.5935529623. The cubic root of 2847972 is about 141.7463567024.

It can be divided in two parts, 284 and 7972, that added together give a triangular number (8256 = T128).

The spelling of 2847972 in words is "two million, eight hundred forty-seven thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 12 237331 474662 711993 949324 1423986 2847972