81460824 has 16 divisors (see below), whose sum is σ = 203652120. Its totient is φ = 27153600.

The previous prime is 81460817. The next prime is 81460829. The reversal of 81460824 is 42806418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81460829) 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, 1697077 + ... + 1697124.

Almost surely, 2^81460824 is an apocalyptic number.

It is an amenable number.

81460824 is an abundant number, since it is smaller than the sum of its proper divisors (122191296).

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

81460824 is a wasteful number, since it uses less digits than its factorization.

81460824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394210 (or 3394206 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 81460824 is about 9025.5650238642. The cubic root of 81460824 is about 433.4938424458.

The spelling of 81460824 in words is "eighty-one million, four hundred sixty thousand, eight hundred twenty-four".