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28852740 = 22335717449
BaseRepresentation
bin110111000010…
…0001000000100
32000021212112000
41232010020010
524341241430
62510225300
7500146530
oct156041004
960255460
1028852740
1115317544
1297b5230
135c92a37
143b90bc0
1527ede60
hex1b84204

28852740 has 192 divisors, whose sum is σ = 108864000. Its totient is φ = 6193152.

The previous prime is 28852729. The next prime is 28852753. The reversal of 28852740 is 4725882.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 28852695 and 28852704.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64036 + ... + 64484.

It is an arithmetic number, because the mean of its divisors is an integer number (567000).

Almost surely, 228852740 is an apocalyptic number.

28852740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28852740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54432000).

28852740 is an abundant number, since it is smaller than the sum of its proper divisors (80011260).

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

28852740 is a wasteful number, since it uses less digits than its factorization.

28852740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 28852740 is about 5371.4746578570. The cubic root of 28852740 is about 306.7107660799.

It can be divided in two parts, 28852 and 740, that added together give a palindrome (29592).

The spelling of 28852740 in words is "twenty-eight million, eight hundred fifty-two thousand, seven hundred forty".