402415432 has 32 divisors (see below), whose sum is σ = 814001400. Its totient is φ = 185795584.

The previous prime is 402415423. The next prime is 402415439. The reversal of 402415432 is 234514204.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 391485796 + 10929636 = 19786^2 + 3306^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402415397 and 402415406.

It is not an unprimeable number, because it can be changed into a prime (402415439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20707 + ... + 35122.

Almost surely, 2^402415432 is an apocalyptic number.

It is an amenable number.

402415432 is an abundant number, since it is smaller than the sum of its proper divisors (411585968).

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

402415432 is a wasteful number, since it uses less digits than its factorization.

402415432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55905 (or 55901 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 402415432 is about 20060.2949130864. The cubic root of 402415432 is about 738.2864123829.

Adding to 402415432 its reverse (234514204), we get a palindrome (636929636).

The spelling of 402415432 in words is "four hundred two million, four hundred fifteen thousand, four hundred thirty-two".