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679248380 = 22533962419
BaseRepresentation
bin101000011111001…
…000000111111100
31202100010101121102
4220133020013330
52342341422010
6151222352232
722555341656
oct5037100774
91670111542
10679248380
113194663a8
1216b58b678
13aa954b25
14662d56d6
153e973ba5
hex287c81fc

679248380 has 12 divisors (see below), whose sum is σ = 1426421640. Its totient is φ = 271699344.

The previous prime is 679248373. The next prime is 679248407. The reversal of 679248380 is 83842976.

679248380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×6792483802 = 922756723465248800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16981190 + ... + 16981229.

It is an arithmetic number, because the mean of its divisors is an integer number (118868470).

Almost surely, 2679248380 is an apocalyptic number.

It is an amenable number.

679248380 is an abundant number, since it is smaller than the sum of its proper divisors (747173260).

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

679248380 is a wasteful number, since it uses less digits than its factorization.

679248380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33962428 (or 33962426 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 679248380 is about 26062.3939805997. The cubic root of 679248380 is about 879.0418203659.

The spelling of 679248380 in words is "six hundred seventy-nine million, two hundred forty-eight thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 33962419 67924838 135849676 169812095 339624190 679248380