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9987004 = 2212491999
BaseRepresentation
bin100110000110…
…001110111100
3200210101121001
4212012032330
510024041004
6554020044
7150613426
oct46061674
920711531
109987004
115701425
123417624
1320b8991
14147d816
15d241a4
hex9863bc

9987004 has 12 divisors (see below), whose sum is σ = 17500000. Its totient is φ = 4987008.

The previous prime is 9987001. The next prime is 9987013. The reversal of 9987004 is 4007899.

It is a happy number.

9987004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9987001) 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, 3997 + ... + 5995.

Almost surely, 29987004 is an apocalyptic number.

9987004 is the 1999-th heptagonal number.

It is an amenable number.

9987004 is a deficient number, since it is larger than the sum of its proper divisors (7512996).

9987004 is a wasteful number, since it uses less digits than its factorization.

9987004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252 (or 3250 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 9987004 is about 3160.2221440905. Note that the first 3 decimals coincide. The cubic root of 9987004 is about 215.3500984326.

The spelling of 9987004 in words is "nine million, nine hundred eighty-seven thousand, four".

Divisors: 1 2 4 1249 1999 2498 3998 4996 7996 2496751 4993502 9987004