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7990003 = 75711999
BaseRepresentation
bin11110011110101011110011
3120000221020001
4132132223303
54021140003
6443130431
7124625320
oct36365363
916027201
107990003
11456800a
122813a17
131869a18
1410bdb47
15a7c61d
hex79eaf3

7990003 has 8 divisors (see below), whose sum is σ = 9152000. Its totient is φ = 6833160.

The previous prime is 7990001. The next prime is 7990057. The reversal of 7990003 is 3000997.

7990003 is a nontrivial binomial coefficient, being equal to C(3998, 2).

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 7990003 - 21 = 7990001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7990001) 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, 2998 + ... + 4996.

It is an arithmetic number, because the mean of its divisors is an integer number (1144000).

Almost surely, 27990003 is an apocalyptic number.

7990003 is the 3997-th triangular number and also the 1999-th hexagonal number.

7990003 is the 1333-rd centered nonagonal number.

7990003 is a deficient number, since it is larger than the sum of its proper divisors (1161997).

7990003 is a wasteful number, since it uses less digits than its factorization.

7990003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 7990003 is about 2826.6593356823. The cubic root of 7990003 is about 199.9166569412.

The spelling of 7990003 in words is "seven million, nine hundred ninety thousand, three".

Divisors: 1 7 571 1999 3997 13993 1141429 7990003