813420448 has 24 divisors (see below), whose sum is σ = 1602935460. Its totient is φ = 406325760.

The previous prime is 813420409. The next prime is 813420451. The reversal of 813420448 is 844024318.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 721029904 + 92390544 = 26852^2 + 9612^2 .

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, 24028 + ... + 46948.

Almost surely, 2^813420448 is an apocalyptic number.

It is an amenable number.

813420448 is a deficient number, since it is larger than the sum of its proper divisors (789515012).

813420448 is a wasteful number, since it uses less digits than its factorization.

813420448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24040 (or 24032 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 813420448 is about 28520.5267833538. The cubic root of 813420448 is about 933.4800236558.

It can be divided in two parts, 8134 and 20448, that added together give a palindrome (28582).

The spelling of 813420448 in words is "eight hundred thirteen million, four hundred twenty thousand, four hundred forty-eight".