85472240 has 40 divisors (see below), whose sum is σ = 227113440. Its totient is φ = 29304576.

The previous prime is 85472237. The next prime is 85472263. The reversal of 85472240 is 4227458.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 85472197 and 85472206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75755 + ... + 76874.

It is an arithmetic number, because the mean of its divisors is an integer number (5677836).

Almost surely, 2^85472240 is an apocalyptic number.

85472240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85472240 is an abundant number, since it is smaller than the sum of its proper divisors (141641200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85472240 is a wasteful number, since it uses less digits than its factorization.

85472240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152649 (or 152643 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 85472240 is about 9245.1197937074. The cubic root of 85472240 is about 440.4957222807.

Adding to 85472240 its reverse (4227458), we get a palindrome (89699698).

The spelling of 85472240 in words is "eighty-five million, four hundred seventy-two thousand, two hundred forty".