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87074933 = 117915903
BaseRepresentation
bin1010011000010…
…10100001110101
320001211212100112
411030022201311
5134242344213
612350152405
72105060531
oct514124165
9201755315
1087074933
1145173760
12251b2705
131506973a
14b7c8bc1
15799eea8
hex530a875

87074933 has 4 divisors (see below), whose sum is σ = 94990848. Its totient is φ = 79159020.

The previous prime is 87074921. The next prime is 87074947. The reversal of 87074933 is 33947078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87074933 - 216 = 87009397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87074903) 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, 3957941 + ... + 3957962.

It is an arithmetic number, because the mean of its divisors is an integer number (23747712).

Almost surely, 287074933 is an apocalyptic number.

It is an amenable number.

87074933 is a deficient number, since it is larger than the sum of its proper divisors (7915915).

87074933 is a wasteful number, since it uses less digits than its factorization.

87074933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7915914.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 87074933 is about 9331.3950189669. The cubic root of 87074933 is about 443.2319408708.

The spelling of 87074933 in words is "eighty-seven million, seventy-four thousand, nine hundred thirty-three".

Divisors: 1 11 7915903 87074933