Search a number
-
+
19072801 = 117124421
BaseRepresentation
bin100100011000…
…0011100100001
31022212222222001
41020300130201
514340312201
61520444001
7321054556
oct110603441
938788861
1019072801
11a847750
126479601
133c4a3a7
142766a2d
151a1b301
hex1230721

19072801 has 8 divisors (see below), whose sum is σ = 21100608. Its totient is φ = 17094000.

The previous prime is 19072799. The next prime is 19072811. The reversal of 19072801 is 10827091.

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

It is not a de Polignac number, because 19072801 - 21 = 19072799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19072801.

It is not an unprimeable number, because it can be changed into a prime (19072811) 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, 11430 + ... + 12991.

It is an arithmetic number, because the mean of its divisors is an integer number (2637576).

Almost surely, 219072801 is an apocalyptic number.

19072801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19072801 is a deficient number, since it is larger than the sum of its proper divisors (2027807).

19072801 is a wasteful number, since it uses less digits than its factorization.

19072801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24503.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 19072801 is about 4367.2418069074. The cubic root of 19072801 is about 267.1805415764.

Adding to 19072801 its reverse (10827091), we get a palindrome (29899892).

The spelling of 19072801 in words is "nineteen million, seventy-two thousand, eight hundred one".

Divisors: 1 11 71 781 24421 268631 1733891 19072801