402247404 has 192 divisors, whose sum is σ = 1253145600. Its totient is φ = 110232576.

The previous prime is 402247361. The next prime is 402247409. The reversal of 402247404 is 404742204.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (402247409) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 453049 + ... + 453935.

It is an arithmetic number, because the mean of its divisors is an integer number (6526800).

Almost surely, 2^402247404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402247404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626572800).

402247404 is an abundant number, since it is smaller than the sum of its proper divisors (850898196).

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

402247404 is a wasteful number, since it uses less digits than its factorization.

402247404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 402247404 is about 20056.1064017919. The cubic root of 402247404 is about 738.1836412584.

Adding to 402247404 its reverse (404742204), we get a palindrome (806989608).

The spelling of 402247404 in words is "four hundred two million, two hundred forty-seven thousand, four hundred four".