423700290 has 48 divisors (see below), whose sum is σ = 1186364088. Its totient is φ = 104295168.

The previous prime is 423700259. The next prime is 423700297. The reversal of 423700290 is 92007324.

423700290 is a `hidden beast` number, since 4 + 2 + 370 + 0 + 290 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 310852161 + 112848129 = 17631^2 + 10623^2 .

It is not an unprimeable number, because it can be changed into a prime (423700297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179899 + ... + 182238.

Almost surely, 2^423700290 is an apocalyptic number.

423700290 is an abundant number, since it is smaller than the sum of its proper divisors (762663798).

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

423700290 is a wasteful number, since it uses less digits than its factorization.

423700290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362163 (or 362160 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 423700290 is about 20583.9813933068. The cubic root of 423700290 is about 751.0800971070.

The spelling of 423700290 in words is "four hundred twenty-three million, seven hundred thousand, two hundred ninety".