Search a number
-
+
72560028 = 2236046669
BaseRepresentation
bin1000101001100…
…10110110011100
312001112102122110
410110302312130
5122033410103
611111114020
71540515162
oct424626634
9161472573
1072560028
1137a5a472
1220372910
1312056b38
1498cb232
156584403
hex4532d9c

72560028 has 12 divisors (see below), whose sum is σ = 169306760. Its totient is φ = 24186672.

The previous prime is 72560027. The next prime is 72560077. The reversal of 72560028 is 82006527.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 72559977 and 72560004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72560023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3023323 + ... + 3023346.

Almost surely, 272560028 is an apocalyptic number.

It is an amenable number.

72560028 is an abundant number, since it is smaller than the sum of its proper divisors (96746732).

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

72560028 is a wasteful number, since it uses less digits than its factorization.

72560028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046676 (or 6046674 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 72560028 is about 8518.2174191553. The cubic root of 72560028 is about 417.0925959915.

The spelling of 72560028 in words is "seventy-two million, five hundred sixty thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 6046669 12093338 18140007 24186676 36280014 72560028