Search a number
-
+
30231494 = 243351529
BaseRepresentation
bin111001101010…
…0101111000110
32002212220210222
41303110233012
530214401434
62555544342
7514651316
oct163245706
962786728
1030231494
1116079407
12a15b0b2
136356477
14402d446
1529c272e
hex1cd4bc6

30231494 has 8 divisors (see below), whose sum is σ = 46401960. Its totient is φ = 14764176.

The previous prime is 30231493. The next prime is 30231511. The reversal of 30231494 is 49413203.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231493) 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, 175679 + ... + 175850.

It is an arithmetic number, because the mean of its divisors is an integer number (5800245).

Almost surely, 230231494 is an apocalyptic number.

30231494 is a deficient number, since it is larger than the sum of its proper divisors (16170466).

30231494 is a wasteful number, since it uses less digits than its factorization.

30231494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351574.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 30231494 is about 5498.3173789806. The cubic root of 30231494 is about 311.5204321583.

Adding to 30231494 its reverse (49413203), we get a palindrome (79644697).

The spelling of 30231494 in words is "thirty million, two hundred thirty-one thousand, four hundred ninety-four".

Divisors: 1 2 43 86 351529 703058 15115747 30231494