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87474828 = 22371995233
BaseRepresentation
bin1010011011011…
…00001010001100
320002121011220110
411031230022030
5134343143303
612402520020
72111344440
oct515541214
9202534813
1087474828
1145417151
1225366010
131517976c
14b890820
157a2d703
hex536c28c

87474828 has 48 divisors (see below), whose sum is σ = 234483200. Its totient is φ = 24862464.

The previous prime is 87474823. The next prime is 87474859. The reversal of 87474828 is 82847478.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87474823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14100 + ... + 19332.

Almost surely, 287474828 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 87474828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117241600).

87474828 is an abundant number, since it is smaller than the sum of its proper divisors (147008372).

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

87474828 is a wasteful number, since it uses less digits than its factorization.

87474828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5446 (or 5444 counting only the distinct ones).

The product of its digits is 802816, while the sum is 48.

The square root of 87474828 is about 9352.7978701563. The cubic root of 87474828 is about 443.9094247511.

The spelling of 87474828 in words is "eighty-seven million, four hundred seventy-four thousand, eight hundred twenty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 199 398 597 796 1194 1393 2388 2786 4179 5233 5572 8358 10466 15699 16716 20932 31398 36631 62796 73262 109893 146524 219786 439572 1041367 2082734 3124101 4165468 6248202 7289569 12496404 14579138 21868707 29158276 43737414 87474828