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7089990 = 235236333
BaseRepresentation
bin11011000010111101000110
3111100012122020
4123002331012
53303334430
6411544010
7114156345
oct33027506
914305566
107089990
1140028a6
12245b006
13161317b
14d27b5c
15950b10
hex6c2f46

7089990 has 16 divisors (see below), whose sum is σ = 17016048. Its totient is φ = 1890656.

The previous prime is 7089941. The next prime is 7089991. The reversal of 7089990 is 999807.

It is a happy number.

7089990 is digitally balanced in base 4, 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 (7089991) 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, 118137 + ... + 118196.

It is an arithmetic number, because the mean of its divisors is an integer number (1063503).

Almost surely, 27089990 is an apocalyptic number.

7089990 is an abundant number, since it is smaller than the sum of its proper divisors (9926058).

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

7089990 is a wasteful number, since it uses less digits than its factorization.

7089990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236343.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 7089990 is about 2662.7035133488. The cubic root of 7089990 is about 192.1093669441.

The spelling of 7089990 in words is "seven million, eighty-nine thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 236333 472666 708999 1181665 1417998 2363330 3544995 7089990