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7990002 = 234313743
BaseRepresentation
bin11110011110101011110010
3120000221020000
4132132223302
54021140002
6443130430
7124625316
oct36365362
916027200
107990002
114568009
122813a16
131869a17
1410bdb46
15a7c61c
hex79eaf2

7990002 has 80 divisors (see below), whose sum is σ = 19421952. Its totient is φ = 2449440.

The previous prime is 7990001. The next prime is 7990057. The reversal of 7990002 is 2000997.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 39 ways as a sum of consecutive naturals, for example, 185793 + ... + 185835.

Almost surely, 27990002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7990002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9710976).

7990002 is an abundant number, since it is smaller than the sum of its proper divisors (11431950).

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

7990002 is a wasteful number, since it uses less digits than its factorization.

7990002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 7990002 is about 2826.6591587951. The cubic root of 7990002 is about 199.9166486009.

Adding to 7990002 its reverse (2000997), we get a palindrome (9990999).

The spelling of 7990002 in words is "seven million, nine hundred ninety thousand, two".

Divisors: 1 2 3 6 9 18 27 31 37 43 54 62 74 81 86 93 111 129 162 186 222 258 279 333 387 558 666 774 837 999 1147 1161 1333 1591 1674 1998 2294 2322 2511 2666 2997 3182 3441 3483 3999 4773 5022 5994 6882 6966 7998 9546 10323 11997 14319 20646 23994 28638 30969 35991 42957 49321 61938 71982 85914 92907 98642 107973 128871 147963 185814 215946 257742 295926 443889 887778 1331667 2663334 3995001 7990002