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247942916 = 22134768133
BaseRepresentation
bin11101100011101…
…00111100000100
3122021112210201222
432301310330010
51001433133131
640334135512
76100323434
oct1661647404
9567483658
10247942916
11117a59201
126b051598
133c4a22b0
1424d022c4
1516b7987b
hexec74f04

247942916 has 12 divisors (see below), whose sum is σ = 467277132. Its totient is φ = 114435168.

The previous prime is 247942889. The next prime is 247942927. The reversal of 247942916 is 619249742.

247942916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37576900 + 210366016 = 6130^2 + 14504^2 .

It is a super-2 number, since 2×2479429162 = 122951379189166112, which contains 22 as substring.

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, 2384015 + ... + 2384118.

It is an arithmetic number, because the mean of its divisors is an integer number (38939761).

Almost surely, 2247942916 is an apocalyptic number.

247942916 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

247942916 is a deficient number, since it is larger than the sum of its proper divisors (219334216).

247942916 is a wasteful number, since it uses less digits than its factorization.

247942916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4768150 (or 4768148 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 247942916 is about 15746.2032249047. The cubic root of 247942916 is about 628.2279217865.

The spelling of 247942916 in words is "two hundred forty-seven million, nine hundred forty-two thousand, nine hundred sixteen".

Divisors: 1 2 4 13 26 52 4768133 9536266 19072532 61985729 123971458 247942916