85249240 has 16 divisors (see below), whose sum is σ = 191810880. Its totient is φ = 34099680.

The previous prime is 85249231. The next prime is 85249249. The reversal of 85249240 is 4294258.

It is an interprime number because it is at equal distance from previous prime (85249231) and next prime (85249249).

It is a junction number, because it is equal to n+sod(n) for n = 85249196 and 85249205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85249249) 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, 1065576 + ... + 1065655.

It is an arithmetic number, because the mean of its divisors is an integer number (11988180).

Almost surely, 2^85249240 is an apocalyptic number.

It is an amenable number.

85249240 is an abundant number, since it is smaller than the sum of its proper divisors (106561640).

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

85249240 is a wasteful number, since it uses less digits than its factorization.

85249240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131242 (or 2131238 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 85249240 is about 9233.0514999105. The cubic root of 85249240 is about 440.1122991597.

The spelling of 85249240 in words is "eighty-five million, two hundred forty-nine thousand, two hundred forty".