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247008380 = 22512350419
BaseRepresentation
bin11101011100100…
…00110001111100
3122012210022210112
432232100301330
51001213232010
640302125152
76056352023
oct1656206174
9565708715
10247008380
11117480063
126a8807b8
133c235b08
1424b3b8ba
1516a42a05
hexeb90c7c

247008380 has 12 divisors (see below), whose sum is σ = 518717640. Its totient is φ = 98803344.

The previous prime is 247008373. The next prime is 247008401. The reversal of 247008380 is 83800742.

It is a super-2 number, since 2×2470083802 = 122026279580448800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 6175190 + ... + 6175229.

It is an arithmetic number, because the mean of its divisors is an integer number (43226470).

Almost surely, 2247008380 is an apocalyptic number.

247008380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247008380 is an abundant number, since it is smaller than the sum of its proper divisors (271709260).

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

247008380 is a wasteful number, since it uses less digits than its factorization.

247008380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12350428 (or 12350426 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 247008380 is about 15716.5002465562. The cubic root of 247008380 is about 627.4376312991.

The spelling of 247008380 in words is "two hundred forty-seven million, eight thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 12350419 24700838 49401676 61752095 123504190 247008380