Search a number
-
+
68253087 = 373250147
BaseRepresentation
bin1000001000101…
…11010110011111
311202102121122010
410010113112133
5114433044322
610434522303
71456066410
oct404272637
9152377563
1068253087
1135588611
121aa36393
13111a9656
1490c9807
155ed320c
hex411759f

68253087 has 8 divisors (see below), whose sum is σ = 104004736. Its totient is φ = 39001752.

The previous prime is 68253047. The next prime is 68253179. The reversal of 68253087 is 78035286.

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

It is not a de Polignac number, because 68253087 - 26 = 68253023 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 (68253047) 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, 1625053 + ... + 1625094.

It is an arithmetic number, because the mean of its divisors is an integer number (13000592).

Almost surely, 268253087 is an apocalyptic number.

68253087 is a deficient number, since it is larger than the sum of its proper divisors (35751649).

68253087 is a wasteful number, since it uses less digits than its factorization.

68253087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250157.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 68253087 is about 8261.5426525559. The cubic root of 68253087 is about 408.6712625976.

The spelling of 68253087 in words is "sixty-eight million, two hundred fifty-three thousand, eighty-seven".

Divisors: 1 3 7 21 3250147 9750441 22751029 68253087