402323430 has 32 divisors (see below), whose sum is σ = 969737184. Its totient is φ = 106823936.

The previous prime is 402323359. The next prime is 402323473. The reversal of 402323430 is 34323204.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 402323397 and 402323406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21789 + ... + 35768.

It is an arithmetic number, because the mean of its divisors is an integer number (30304287).

Almost surely, 2^402323430 is an apocalyptic number.

402323430 is an abundant number, since it is smaller than the sum of its proper divisors (567413754).

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

402323430 is a wasteful number, since it uses less digits than its factorization.

402323430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57800.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 402323430 is about 20058.0016452288. The cubic root of 402323430 is about 738.2301446571.

Adding to 402323430 its reverse (34323204), we get a palindrome (436646634).

It can be divided in two parts, 402323 and 430, that added together give a triangular number (402753 = T₈₉₇).

The spelling of 402323430 in words is "four hundred two million, three hundred twenty-three thousand, four hundred thirty".