402225380 has 24 divisors (see below), whose sum is σ = 881399232. Its totient is φ = 153894752.

The previous prime is 402225379. The next prime is 402225431. The reversal of 402225380 is 83522204.

It is a super-2 number, since 2×402225380² = 323570512632288800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436742 + ... + 437661.

It is an arithmetic number, because the mean of its divisors is an integer number (36724968).

Almost surely, 2^402225380 is an apocalyptic number.

It is an amenable number.

402225380 is an abundant number, since it is smaller than the sum of its proper divisors (479173852).

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

402225380 is a wasteful number, since it uses less digits than its factorization.

402225380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874435 (or 874433 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 402225380 is about 20055.5573345644. The cubic root of 402225380 is about 738.1701685771.

Adding to 402225380 its reverse (83522204), we get a palindrome (485747584).

The spelling of 402225380 in words is "four hundred two million, two hundred twenty-five thousand, three hundred eighty".