812477540 has 24 divisors (see below), whose sum is σ = 1949946432. Its totient is φ = 278563680.

The previous prime is 812477537. The next prime is 812477557. The reversal of 812477540 is 45774218.

It is a super-3 number, since 3×812477540³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 812477494 and 812477503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2901566 + ... + 2901845.

It is an arithmetic number, because the mean of its divisors is an integer number (81247768).

Almost surely, 2^812477540 is an apocalyptic number.

It is an amenable number.

812477540 is an abundant number, since it is smaller than the sum of its proper divisors (1137468892).

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

812477540 is a wasteful number, since it uses less digits than its factorization.

812477540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5803427 (or 5803425 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 812477540 is about 28503.9916502935. The cubic root of 812477540 is about 933.1191909507.

The spelling of 812477540 in words is "eight hundred twelve million, four hundred seventy-seven thousand, five hundred forty".