Search a number
-
+
80690472 = 2333373567
BaseRepresentation
bin1001100111100…
…11110100101000
312121211111112000
410303303310220
5131124043342
612001251000
71666600122
oct463636450
9177744460
1080690472
1141602a45
1223033a60
1313942755
14aa06212
15713d44c
hex4cf3d28

80690472 has 32 divisors (see below), whose sum is σ = 224140800. Its totient is φ = 26896752.

The previous prime is 80690471. The next prime is 80690479. The reversal of 80690472 is 27409608.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (80690471) 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, 186568 + ... + 186999.

It is an arithmetic number, because the mean of its divisors is an integer number (7004400).

Almost surely, 280690472 is an apocalyptic number.

It is an amenable number.

80690472 is an abundant number, since it is smaller than the sum of its proper divisors (143450328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80690472 is a wasteful number, since it uses less digits than its factorization.

80690472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373582 (or 373572 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 80690472 is about 8982.7875406246. The cubic root of 80690472 is about 432.1230359430.

The spelling of 80690472 in words is "eighty million, six hundred ninety thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216 373567 747134 1120701 1494268 2241402 2988536 3362103 4482804 6724206 8965608 10086309 13448412 20172618 26896824 40345236 80690472