Search a number
-
+
87208028 = 22171282471
BaseRepresentation
bin1010011001010…
…11000001011100
320002002121220222
411030223001130
5134311124103
612353100512
72106153545
oct514530134
9202077828
1087208028
1145254756
1225257738
13150b51ab
14b8214cc
1579c9638
hex532b05c

87208028 has 12 divisors (see below), whose sum is σ = 161591472. Its totient is φ = 41039040.

The previous prime is 87208027. The next prime is 87208031. The reversal of 87208028 is 82080278.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87208027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641168 + ... + 641303.

It is an arithmetic number, because the mean of its divisors is an integer number (13465956).

Almost surely, 287208028 is an apocalyptic number.

It is an amenable number.

87208028 is a deficient number, since it is larger than the sum of its proper divisors (74383444).

87208028 is a wasteful number, since it uses less digits than its factorization.

87208028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282492 (or 1282490 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 87208028 is about 9338.5238662221. The cubic root of 87208028 is about 443.4576542192.

The spelling of 87208028 in words is "eighty-seven million, two hundred eight thousand, twenty-eight".

Divisors: 1 2 4 17 34 68 1282471 2564942 5129884 21802007 43604014 87208028