Search a number
-
+
72369193 = 138962549
BaseRepresentation
bin1000101000001…
…00010000101001
312001011201212111
410110010100221
5122011303233
611103042321
71536061621
oct424042051
9161151774
1072369193
113793a056
12202a03a1
1311cbb010
14987b881
156547acd
hex4504429

72369193 has 8 divisors (see below), whose sum is σ = 78813000. Its totient is φ = 66050688.

The previous prime is 72369191. The next prime is 72369197. The reversal of 72369193 is 39196327.

It can be written as a sum of positive squares in 4 ways, for example, as 10778089 + 61591104 = 3283^2 + 7848^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72369193 - 21 = 72369191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72369191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30118 + ... + 32431.

It is an arithmetic number, because the mean of its divisors is an integer number (9851625).

Almost surely, 272369193 is an apocalyptic number.

It is an amenable number.

72369193 is a deficient number, since it is larger than the sum of its proper divisors (6443807).

72369193 is a wasteful number, since it uses less digits than its factorization.

72369193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62651.

The product of its digits is 61236, while the sum is 40.

The square root of 72369193 is about 8507.0084636140. The cubic root of 72369193 is about 416.7266197109.

The spelling of 72369193 in words is "seventy-two million, three hundred sixty-nine thousand, one hundred ninety-three".

Divisors: 1 13 89 1157 62549 813137 5566861 72369193