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7990284 = 223665857
BaseRepresentation
bin11110011110110000001100
3120000221121110
4132132300030
54021142114
6443132020
7124626201
oct36366014
916027543
107990284
114568245
122814010
131869ba3
1410bdca8
15a7c759
hex79ec0c

7990284 has 12 divisors (see below), whose sum is σ = 18644024. Its totient is φ = 2663424.

The previous prime is 7990277. The next prime is 7990291. The reversal of 7990284 is 4820997.

It is an interprime number because it is at equal distance from previous prime (7990277) and next prime (7990291).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332917 + ... + 332940.

Almost surely, 27990284 is an apocalyptic number.

It is an amenable number.

7990284 is an abundant number, since it is smaller than the sum of its proper divisors (10653740).

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

7990284 is a wasteful number, since it uses less digits than its factorization.

7990284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665864 (or 665862 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 7990284 is about 2826.7090405629. The cubic root of 7990284 is about 199.9190005332.

The spelling of 7990284 in words is "seven million, nine hundred ninety thousand, two hundred eighty-four".

Divisors: 1 2 3 4 6 12 665857 1331714 1997571 2663428 3995142 7990284