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28354536 = 2334721947
BaseRepresentation
bin110110000101…
…0011111101000
31222100120010000
41230022133220
524224321121
62451423000
7463003200
oct154123750
958316100
1028354536
1115007201
1295b4a60
135b4a042
143aa1400
152751526
hex1b0a7e8

28354536 has 240 divisors, whose sum is σ = 99316800. Its totient is φ = 7511616.

The previous prime is 28354531. The next prime is 28354537. The reversal of 28354536 is 63545382.

It is a happy number.

28354536 is a `hidden beast` number, since 2 + 83 + 545 + 36 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28354536.

It is not an unprimeable number, because it can be changed into a prime (28354531) 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 59 ways as a sum of consecutive naturals, for example, 603265 + ... + 603311.

It is an arithmetic number, because the mean of its divisors is an integer number (413820).

Almost surely, 228354536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28354536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49658400).

28354536 is an abundant number, since it is smaller than the sum of its proper divisors (70962264).

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

28354536 is a wasteful number, since it uses less digits than its factorization.

28354536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 78 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 28354536 is about 5324.8977454971. The cubic root of 28354536 is about 304.9351685189.

It can be divided in two parts, 2 and 8354536, that added together give a palindrome (8354538).

The spelling of 28354536 in words is "twenty-eight million, three hundred fifty-four thousand, five hundred thirty-six".