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7813230 = 235260441
BaseRepresentation
bin11101110011100001101110
3112200221201220
4131303201232
54000010410
6435244210
7123261045
oct35634156
915627656
107813230
114457217
122749666
131807419
14107555c
15a45070
hex77386e

7813230 has 16 divisors (see below), whose sum is σ = 18751824. Its totient is φ = 2083520.

The previous prime is 7813213. The next prime is 7813241. The reversal of 7813230 is 323187.

It is a super-2 number, since 2×78132302 = 122093126065800, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7813230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130191 + ... + 130250.

It is an arithmetic number, because the mean of its divisors is an integer number (1171989).

Almost surely, 27813230 is an apocalyptic number.

7813230 is an abundant number, since it is smaller than the sum of its proper divisors (10938594).

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

7813230 is a wasteful number, since it uses less digits than its factorization.

7813230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260451.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 7813230 is about 2795.2155551943. The cubic root of 7813230 is about 198.4313115850.

The spelling of 7813230 in words is "seven million, eight hundred thirteen thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 260441 520882 781323 1302205 1562646 2604410 3906615 7813230