Search a number
30032807 = 715712731
BaseRepresentation
bin111001010010…
…0001110100111
32002111211021012
41302210032213
530142022212
62551412435
7513163130
oct162441647
962454235
1030032807
1115a53102
12a08411b
1362b6bbc
143dbac87
152983922
hex1ca43a7

30032807 has 8 divisors (see below), whose sum is σ = 34357632. Its totient is φ = 25716600.

The previous prime is 30032771. The next prime is 30032813. The reversal of 30032807 is 70823003.

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

It is not a de Polignac number, because 30032807 - 28 = 30032551 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 (30032837) 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, 9632 + ... + 12362.

It is an arithmetic number, because the mean of its divisors is an integer number (4294704).

Almost surely, 230032807 is an apocalyptic number.

30032807 is a deficient number, since it is larger than the sum of its proper divisors (4324825).

30032807 is a wasteful number, since it uses less digits than its factorization.

30032807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 30032807 is about 5480.2196123878. The cubic root of 30032807 is about 310.8364748625.

The spelling of 30032807 in words is "thirty million, thirty-two thousand, eight hundred seven".

Divisors: 1 7 1571 2731 10997 19117 4290401 30032807