402340032 has 42 divisors (see below), whose sum is σ = 1153236708. Its totient is φ = 134113152.

The previous prime is 402340027. The next prime is 402340039. The reversal of 402340032 is 230043204.

It is a super-2 number, since 2×402340032² = 323755002699522048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 402339987 and 402340014.

It is not an unprimeable number, because it can be changed into a prime (402340039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 348678 + ... + 349829.

Almost surely, 2^402340032 is an apocalyptic number.

It is an amenable number.

402340032 is an abundant number, since it is smaller than the sum of its proper divisors (750896676).

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

402340032 is a wasteful number, since it uses less digits than its factorization.

402340032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698525 (or 698512 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 402340032 is about 20058.4154907610. The cubic root of 402340032 is about 738.2402989487.

Adding to 402340032 its reverse (230043204), we get a palindrome (632383236).

The spelling of 402340032 in words is "four hundred two million, three hundred forty thousand, thirty-two".