402225534 has 64 divisors (see below), whose sum is σ = 933249600. Its totient is φ = 128249856.

The previous prime is 402225529. The next prime is 402225601. The reversal of 402225534 is 435522204.

It is a happy number.

402225534 is a `hidden beast` number, since 402 + 2 + 255 + 3 + 4 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 402225498 and 402225507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175822 + ... + 178094.

It is an arithmetic number, because the mean of its divisors is an integer number (14582025).

Almost surely, 2^402225534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402225534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466624800).

402225534 is an abundant number, since it is smaller than the sum of its proper divisors (531024066).

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

402225534 is a wasteful number, since it uses less digits than its factorization.

402225534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426 (or 2420 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 402225534 is about 20055.5611738989. The cubic root of 402225534 is about 738.1702627848.

Adding to 402225534 its reverse (435522204), we get a palindrome (837747738).

The spelling of 402225534 in words is "four hundred two million, two hundred twenty-five thousand, five hundred thirty-four".