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87494401 = 471861583
BaseRepresentation
bin1010011011100…
…00111100000001
320002122011202101
411031300330001
5134344310101
612403150401
72111455501
oct515607401
9202564671
1087494401
114542a925
1225375401
1315185647
14b897a01
157a34401
hex5370f01

87494401 has 4 divisors (see below), whose sum is σ = 89356032. Its totient is φ = 85632772.

The previous prime is 87494389. The next prime is 87494417. The reversal of 87494401 is 10449478.

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 87494401 - 217 = 87363329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87494471) 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, 930745 + ... + 930838.

It is an arithmetic number, because the mean of its divisors is an integer number (22339008).

Almost surely, 287494401 is an apocalyptic number.

It is an amenable number.

87494401 is a deficient number, since it is larger than the sum of its proper divisors (1861631).

87494401 is a wasteful number, since it uses less digits than its factorization.

87494401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861630.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 87494401 is about 9353.8441830084. The cubic root of 87494401 is about 443.9425313845.

The spelling of 87494401 in words is "eighty-seven million, four hundred ninety-four thousand, four hundred one".

Divisors: 1 47 1861583 87494401