402440352 has 24 divisors (see below), whose sum is σ = 1056406176. Its totient is φ = 134146752.

The previous prime is 402440351. The next prime is 402440383. The reversal of 402440352 is 253044204.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (402440351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2095948 + ... + 2096139.

It is an arithmetic number, because the mean of its divisors is an integer number (44016924).

Almost surely, 2^402440352 is an apocalyptic number.

It is an amenable number.

402440352 is an abundant number, since it is smaller than the sum of its proper divisors (653965824).

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

402440352 is a wasteful number, since it uses less digits than its factorization.

402440352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192100 (or 4192092 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 402440352 is about 20060.9160309294. The cubic root of 402440352 is about 738.3016517898.

Adding to 402440352 its reverse (253044204), we get a palindrome (655484556).

The spelling of 402440352 in words is "four hundred two million, four hundred forty thousand, three hundred fifty-two".