85490428 has 12 divisors (see below), whose sum is σ = 149709672. Its totient is φ = 42716240.

The previous prime is 85490417. The next prime is 85490429. The reversal of 85490428 is 82409458.

It is a super-2 number, since 2×85490428² = 14617226559246368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85490429) 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, 258 + ... + 13078.

It is an arithmetic number, because the mean of its divisors is an integer number (12475806).

Almost surely, 2^85490428 is an apocalyptic number.

It is an amenable number.

85490428 is a deficient number, since it is larger than the sum of its proper divisors (64219244).

85490428 is a wasteful number, since it uses less digits than its factorization.

85490428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14492 (or 14490 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 85490428 is about 9246.1033954850. The cubic root of 85490428 is about 440.5269650482.

The spelling of 85490428 in words is "eighty-five million, four hundred ninety thousand, four hundred twenty-eight".