86897240 has 32 divisors (see below), whose sum is σ = 196938000. Its totient is φ = 34506624.

The previous prime is 86897231. The next prime is 86897249. The reversal of 86897240 is 4279868.

It is an interprime number because it is at equal distance from previous prime (86897231) and next prime (86897249).

It is a super-2 number, since 2×86897240² = 15102260639235200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86897191 and 86897200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86897249) 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, 2255 + ... + 13374.

Almost surely, 2^86897240 is an apocalyptic number.

It is an amenable number.

86897240 is an abundant number, since it is smaller than the sum of its proper divisors (110040760).

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

86897240 is a wasteful number, since it uses less digits than its factorization.

86897240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15779 (or 15775 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 86897240 is about 9321.8689113289. The cubic root of 86897240 is about 442.9302357923.

The spelling of 86897240 in words is "eighty-six million, eight hundred ninety-seven thousand, two hundred forty".