402023334 has 16 divisors (see below), whose sum is σ = 807413760. Its totient is φ = 133446600.

The previous prime is 402023333. The next prime is 402023339. The reversal of 402023334 is 433320204.

It is a super-2 number, since 2×402023334² = 323245522160951112, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 402023334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402023333) 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, 138742 + ... + 141609.

It is an arithmetic number, because the mean of its divisors is an integer number (50463360).

Almost surely, 2^402023334 is an apocalyptic number.

402023334 is an abundant number, since it is smaller than the sum of its proper divisors (405390426).

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

402023334 is a wasteful number, since it uses less digits than its factorization.

402023334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280595.

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

The square root of 402023334 is about 20050.5195443909. The cubic root of 402023334 is about 738.0465485728.

Adding to 402023334 its reverse (433320204), we get a palindrome (835343538).

The spelling of 402023334 in words is "four hundred two million, twenty-three thousand, three hundred thirty-four".