6442380 has 72 divisors (see below), whose sum is σ = 22337952. Its totient is φ = 1472256.

The previous prime is 6442367. The next prime is 6442399. The reversal of 6442380 is 832446.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1297 + ... + 3816.

Almost surely, 2^6442380 is an apocalyptic number.

6442380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6442380 is an abundant number, since it is smaller than the sum of its proper divisors (15895572).

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

6442380 is a wasteful number, since it uses less digits than its factorization.

6442380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135 (or 5130 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 6442380 is about 2538.1843904650. The cubic root of 6442380 is about 186.0724656936.

The spelling of 6442380 in words is "six million, four hundred forty-two thousand, three hundred eighty".