81027260 has 12 divisors (see below), whose sum is σ = 170157288. Its totient is φ = 32410896.

The previous prime is 81027251. The next prime is 81027277. The reversal of 81027260 is 6272018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2025662 + ... + 2025701.

It is an arithmetic number, because the mean of its divisors is an integer number (14179774).

Almost surely, 2^81027260 is an apocalyptic number.

It is an amenable number.

81027260 is an abundant number, since it is smaller than the sum of its proper divisors (89130028).

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

81027260 is a wasteful number, since it uses less digits than its factorization.

81027260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051372 (or 4051370 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 81027260 is about 9001.5143170469. The cubic root of 81027260 is about 432.7234035782.

Adding to 81027260 its reverse (6272018), we get a palindrome (87299278).

The spelling of 81027260 in words is "eighty-one million, twenty-seven thousand, two hundred sixty".