Search a number
-
+
72190082 = 21910491811
BaseRepresentation
bin1000100110110…
…00100010000010
312000211122011202
410103120202002
5121440040312
611055141202
71534414466
oct423304202
9160748152
1072190082
1137827528
1220214802
1311c57633
1498324a6
15650e9c2
hex44d8882

72190082 has 16 divisors (see below), whose sum is σ = 114156000. Its totient is φ = 34143840.

The previous prime is 72190049. The next prime is 72190091. The reversal of 72190082 is 28009127.

It is a happy number.

It is a super-2 number, since 2×721900822 = 10422815878333448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38957 + ... + 40767.

It is an arithmetic number, because the mean of its divisors is an integer number (7134750).

Almost surely, 272190082 is an apocalyptic number.

72190082 is a deficient number, since it is larger than the sum of its proper divisors (41965918).

72190082 is a wasteful number, since it uses less digits than its factorization.

72190082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 72190082 is about 8496.4746807132. The cubic root of 72190082 is about 416.3825415168.

The spelling of 72190082 in words is "seventy-two million, one hundred ninety thousand, eighty-two".

Divisors: 1 2 19 38 1049 1811 2098 3622 19931 34409 39862 68818 1899739 3799478 36095041 72190082