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85494731 = 783147151
BaseRepresentation
bin1010001100010…
…00101111001011
312221212120201112
411012020233023
5133341312411
612252240535
72055456530
oct506105713
9187776645
1085494731
1144294503
122477014b
13149353ca
14b4d6d87
15778bb8b
hex5188bcb

85494731 has 8 divisors (see below), whose sum is σ = 98886144. Its totient is φ = 72397800.

The previous prime is 85494719. The next prime is 85494757. The reversal of 85494731 is 13749458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-85494731 is a prime.

It is a super-2 number, since 2×854947312 = 14618698057524722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85494701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72995 + ... + 74156.

It is an arithmetic number, because the mean of its divisors is an integer number (12360768).

Almost surely, 285494731 is an apocalyptic number.

85494731 is a deficient number, since it is larger than the sum of its proper divisors (13391413).

85494731 is a wasteful number, since it uses less digits than its factorization.

85494731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147241.

The product of its digits is 120960, while the sum is 41.

The square root of 85494731 is about 9246.3360851745. The cubic root of 85494731 is about 440.5343559565.

The spelling of 85494731 in words is "eighty-five million, four hundred ninety-four thousand, seven hundred thirty-one".

Divisors: 1 7 83 581 147151 1030057 12213533 85494731