Search a number
-
+
72758001 = 397124977
BaseRepresentation
bin1000101011000…
…11001011110001
312001220111012210
410111203023301
5122111224001
611115242333
71542301311
oct425431361
9161814183
1072758001
1138085188
12204493a9
13120c5c94
14993d441
1565c2dd6
hex45632f1

72758001 has 8 divisors (see below), whose sum is σ = 97114464. Its totient is φ = 48453440.

The previous prime is 72757999. The next prime is 72758009. The reversal of 72758001 is 10085727.

It is a happy number.

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 72758001 - 21 = 72757999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72758001.

It is not an unprimeable number, because it can be changed into a prime (72758009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9576 + ... + 15401.

It is an arithmetic number, because the mean of its divisors is an integer number (12139308).

Almost surely, 272758001 is an apocalyptic number.

It is an amenable number.

72758001 is a deficient number, since it is larger than the sum of its proper divisors (24356463).

72758001 is a wasteful number, since it uses less digits than its factorization.

72758001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25951.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 72758001 is about 8529.8300686473. The cubic root of 72758001 is about 417.4715837568.

The spelling of 72758001 in words is "seventy-two million, seven hundred fifty-eight thousand, one".

Divisors: 1 3 971 2913 24977 74931 24252667 72758001