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72635061 = 324211687
BaseRepresentation
bin1000101010001…
…01001010110101
312001200020120110
410111011022311
5122043310221
611112453233
71541250012
oct425051265
9161606513
1072635061
1138000884
12203aa219
1312082035
14990a709
15659b776
hex45452b5

72635061 has 4 divisors (see below), whose sum is σ = 96846752. Its totient is φ = 48423372.

The previous prime is 72635051. The next prime is 72635083. The reversal of 72635061 is 16053627.

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 not a de Polignac number, because 72635061 - 25 = 72635029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72635021) 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, 12105841 + ... + 12105846.

It is an arithmetic number, because the mean of its divisors is an integer number (24211688).

Almost surely, 272635061 is an apocalyptic number.

It is an amenable number.

72635061 is a deficient number, since it is larger than the sum of its proper divisors (24211691).

72635061 is a wasteful number, since it uses less digits than its factorization.

72635061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24211690.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 72635061 is about 8522.6205476954. The cubic root of 72635061 is about 417.2363157427.

Adding to 72635061 its reverse (16053627), we get a palindrome (88688688).

The spelling of 72635061 in words is "seventy-two million, six hundred thirty-five thousand, sixty-one".

Divisors: 1 3 24211687 72635061