810273140 has 12 divisors (see below), whose sum is σ = 1701573636. Its totient is φ = 324109248.

The previous prime is 810273103. The next prime is 810273151. The reversal of 810273140 is 41372018.

It can be written as a sum of positive squares in 2 ways, for example, as 612364516 + 197908624 = 24746^2 + 14068^2 .

It is a super-2 number, since 2×810273140² = 1313085122810919200, which contains 22 as substring.

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, 20256809 + ... + 20256848.

It is an arithmetic number, because the mean of its divisors is an integer number (141797803).

Almost surely, 2^810273140 is an apocalyptic number.

It is an amenable number.

810273140 is an abundant number, since it is smaller than the sum of its proper divisors (891300496).

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

810273140 is a wasteful number, since it uses less digits than its factorization.

810273140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40513666 (or 40513664 counting only the distinct ones).

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

The square root of 810273140 is about 28465.2971177186. The cubic root of 810273140 is about 932.2745189598.

The spelling of 810273140 in words is "eight hundred ten million, two hundred seventy-three thousand, one hundred forty".