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80525430 = 23251752631
BaseRepresentation
bin1001100110010…
…11100001110110
312121112010010100
410303023201312
5131103303210
611553534530
71665312006
oct463134166
9177463110
1080525430
11414aaa47
1222b74446
13138b55ab
14a9a2006
1571095c0
hex4ccb876

80525430 has 48 divisors (see below), whose sum is σ = 221685984. Its totient is φ = 20209920.

The previous prime is 80525387. The next prime is 80525441. The reversal of 80525430 is 3452508.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80525394 and 80525403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24786 + ... + 27845.

It is an arithmetic number, because the mean of its divisors is an integer number (4618458).

Almost surely, 280525430 is an apocalyptic number.

80525430 is an abundant number, since it is smaller than the sum of its proper divisors (141160554).

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

80525430 is a wasteful number, since it uses less digits than its factorization.

80525430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52661 (or 52658 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 80525430 is about 8973.5962690551. The cubic root of 80525430 is about 431.8282174516.

Adding to 80525430 its reverse (3452508), we get a palindrome (83977938).

The spelling of 80525430 in words is "eighty million, five hundred twenty-five thousand, four hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 17 18 30 34 45 51 85 90 102 153 170 255 306 510 765 1530 52631 105262 157893 263155 315786 473679 526310 789465 894727 947358 1578930 1789454 2368395 2684181 4473635 4736790 5368362 8052543 8947270 13420905 16105086 26841810 40262715 80525430