Search a number
-
+
30233089 = 171778417
BaseRepresentation
bin111001101010…
…1001000000001
32002220000000001
41303111020001
530214424324
63000000001
7514656055
oct163251001
962800001
1030233089
111607a627
12a160001
136357103
14402dc65
1529c2e44
hex1cd5201

30233089 has 4 divisors (see below), whose sum is σ = 32011524. Its totient is φ = 28454656.

The previous prime is 30233087. The next prime is 30233101. The reversal of 30233089 is 98033203.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98033203 = 175766659.

It can be written as a sum of positive squares in 2 ways, for example, as 11022400 + 19210689 = 3320^2 + 4383^2 .

It is a cyclic number.

It is not a de Polignac number, because 30233089 - 21 = 30233087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30233081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889192 + ... + 889225.

It is an arithmetic number, because the mean of its divisors is an integer number (8002881).

Almost surely, 230233089 is an apocalyptic number.

It is an amenable number.

30233089 is a deficient number, since it is larger than the sum of its proper divisors (1778435).

30233089 is a wasteful number, since it uses less digits than its factorization.

30233089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778434.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 30233089 is about 5498.4624214411. The cubic root of 30233089 is about 311.5259106211.

The spelling of 30233089 in words is "thirty million, two hundred thirty-three thousand, eighty-nine".

Divisors: 1 17 1778417 30233089