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52212080 = 245652651
BaseRepresentation
bin1100011100101…
…1000101110000
310122020122111202
43013023011300
5101331241310
65103030332
71202536544
oct307130560
9118218452
1052212080
1127521788
121559b3a8
13aa8122b
146d11a24
1548b53a5
hex31cb170

52212080 has 20 divisors (see below), whose sum is σ = 121393272. Its totient is φ = 20884800.

The previous prime is 52212073. The next prime is 52212131. The reversal of 52212080 is 8021225.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×522120802 = 5452202595852800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 326246 + ... + 326405.

Almost surely, 252212080 is an apocalyptic number.

It is an amenable number.

52212080 is an abundant number, since it is smaller than the sum of its proper divisors (69181192).

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

52212080 is a wasteful number, since it uses less digits than its factorization.

52212080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652664 (or 652658 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 52212080 is about 7225.7926900791. The cubic root of 52212080 is about 373.7578575023.

The spelling of 52212080 in words is "fifty-two million, two hundred twelve thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 652651 1305302 2610604 3263255 5221208 6526510 10442416 13053020 26106040 52212080