Search a number
-
+
72587041 = 199364759
BaseRepresentation
bin1000101001110…
…01011100100001
312001120210200221
410110321130201
5122040241131
611111443041
71540660012
oct424713441
9161523627
1072587041
1137a7879a
1220386481
1312066217
1498d7009
15658c411
hex4539721

72587041 has 4 divisors (see below), whose sum is σ = 72952000. Its totient is φ = 72222084.

The previous prime is 72587033. The next prime is 72587071. The reversal of 72587041 is 14078527.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72587041 - 23 = 72587033 is a prime.

It is a super-2 number, since 2×725870412 = 10537757042271362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72586988 and 72587006.

It is not an unprimeable number, because it can be changed into a prime (72587071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182181 + ... + 182578.

It is an arithmetic number, because the mean of its divisors is an integer number (18238000).

Almost surely, 272587041 is an apocalyptic number.

It is an amenable number.

72587041 is a deficient number, since it is larger than the sum of its proper divisors (364959).

72587041 is a wasteful number, since it uses less digits than its factorization.

72587041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364958.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 72587041 is about 8519.8028733064. The cubic root of 72587041 is about 417.1443486563.

The spelling of 72587041 in words is "seventy-two million, five hundred eighty-seven thousand, forty-one".

Divisors: 1 199 364759 72587041