395272644 has 96 divisors (see below), whose sum is σ = 1061786880. Its totient is φ = 113369088.

The previous prime is 395272607. The next prime is 395272673. The reversal of 395272644 is 446272593.

It is a junction number, because it is equal to n+sod(n) for n = 395272596 and 395272605.

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, 299017 + ... + 300335.

It is an arithmetic number, because the mean of its divisors is an integer number (11060280).

Almost surely, 2^395272644 is an apocalyptic number.

395272644 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395272644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530893440).

395272644 is an abundant number, since it is smaller than the sum of its proper divisors (666514236).

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

395272644 is a wasteful number, since it uses less digits than its factorization.

395272644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1467 counting only the distinct ones).

The product of its digits is 362880, while the sum is 42.

The square root of 395272644 is about 19881.4648353686. The cubic root of 395272644 is about 733.8921678811.

The spelling of 395272644 in words is "three hundred ninety-five million, two hundred seventy-two thousand, six hundred forty-four".