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247925052 = 22326886807
BaseRepresentation
bin11101100011100…
…00100100111100
3122021111220020100
432301300210330
51001432100202
640333521100
76100220364
oct1661604474
9567456210
10247925052
11117a46841
126b043190
133c49711b
1424cd99a4
1516b7441c
hexec7093c

247925052 has 18 divisors (see below), whose sum is σ = 626699528. Its totient is φ = 82641672.

The previous prime is 247925039. The next prime is 247925071. The reversal of 247925052 is 250529742.

It is a happy number.

247925052 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×2479250522 = 122933662818405408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6886807 = 247925052 / (2 + 4 + 7 + 9 + 2 + 5 + 0 + 5 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 247924998 and 247925016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3443368 + ... + 3443439.

Almost surely, 2247925052 is an apocalyptic number.

It is an amenable number.

247925052 is an abundant number, since it is smaller than the sum of its proper divisors (378774476).

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

247925052 is a wasteful number, since it uses less digits than its factorization.

247925052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6886817 (or 6886812 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 247925052 is about 15745.6359668322. The cubic root of 247925052 is about 628.2128337260.

The spelling of 247925052 in words is "two hundred forty-seven million, nine hundred twenty-five thousand, fifty-two".

Divisors: 1 2 3 4 6 9 12 18 36 6886807 13773614 20660421 27547228 41320842 61981263 82641684 123962526 247925052