523740402 has 48 divisors (see below), whose sum is σ = 1171277952. Its totient is φ = 169011360.

The previous prime is 523740401. The next prime is 523740409. The reversal of 523740402 is 204047325.

It is not an unprimeable number, because it can be changed into a prime (523740401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138663 + ... + 142389.

It is an arithmetic number, because the mean of its divisors is an integer number (24401624).

Almost surely, 2^523740402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523740402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585638976).

523740402 is an abundant number, since it is smaller than the sum of its proper divisors (647537550).

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

523740402 is a wasteful number, since it uses less digits than its factorization.

523740402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983 (or 3980 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 523740402 is about 22885.3752864138. The cubic root of 523740402 is about 806.0686408015.

Adding to 523740402 its reverse (204047325), we get a palindrome (727787727).

The spelling of 523740402 in words is "five hundred twenty-three million, seven hundred forty thousand, four hundred two".