823428958 has 24 divisors (see below), whose sum is σ = 1404464040. Its totient is φ = 361376400.

The previous prime is 823428941. The next prime is 823428959. The reversal of 823428958 is 859824328.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823428959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51648 + ... + 65683.

It is an arithmetic number, because the mean of its divisors is an integer number (58519335).

Almost surely, 2^823428958 is an apocalyptic number.

823428958 is a deficient number, since it is larger than the sum of its proper divisors (581035082).

823428958 is a wasteful number, since it uses less digits than its factorization.

823428958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117384 (or 117373 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The square root of 823428958 is about 28695.4518695908. The cubic root of 823428958 is about 937.2930109663.

The spelling of 823428958 in words is "eight hundred twenty-three million, four hundred twenty-eight thousand, nine hundred fifty-eight".