813254740 has 48 divisors (see below), whose sum is σ = 1724292864. Its totient is φ = 322185600.

The previous prime is 813254719. The next prime is 813254747. The reversal of 813254740 is 47452318.

It is a super-2 number, since 2×813254740² = 1322766544264935200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 813254696 and 813254705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813254747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1230010 + ... + 1230670.

It is an arithmetic number, because the mean of its divisors is an integer number (35922768).

Almost surely, 2^813254740 is an apocalyptic number.

It is an amenable number.

813254740 is an abundant number, since it is smaller than the sum of its proper divisors (911038124).

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

813254740 is a wasteful number, since it uses less digits than its factorization.

813254740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 813254740 is about 28517.6215698294. The cubic root of 813254740 is about 933.4166306043.

The spelling of 813254740 in words is "eight hundred thirteen million, two hundred fifty-four thousand, seven hundred forty".