85278433 has 8 divisors (see below), whose sum is σ = 86486400. Its totient is φ = 84074928.

The previous prime is 85278359. The next prime is 85278461. The reversal of 85278433 is 33487258.

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

It is a cyclic number.

It is not a de Polignac number, because 85278433 - 2⁹ = 85277921 is a prime.

It is a super-2 number, since 2×85278433² = 14544822269870978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85278463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58963 + ... + 60391.

It is an arithmetic number, because the mean of its divisors is an integer number (10810800).

Almost surely, 2^85278433 is an apocalyptic number.

85278433 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

85278433 is a deficient number, since it is larger than the sum of its proper divisors (1207967).

85278433 is a wasteful number, since it uses less digits than its factorization.

85278433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231.

The product of its digits is 161280, while the sum is 40.

The square root of 85278433 is about 9234.6322612219. The cubic root of 85278433 is about 440.1625312088.

The spelling of 85278433 in words is "eighty-five million, two hundred seventy-eight thousand, four hundred thirty-three".