395231616 has 256 divisors, whose sum is σ = 1325184000. Its totient is φ = 114960384.

The previous prime is 395231591. The next prime is 395231621. The reversal of 395231616 is 616132593.

395231616 is a `hidden beast` number, since 3 + 9 + 5 + 2 + 31 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 853401 + ... + 853863.

It is an arithmetic number, because the mean of its divisors is an integer number (5176500).

Almost surely, 2^395231616 is an apocalyptic number.

395231616 is a gapful number since it is divisible by the number (36) 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 395231616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (662592000).

395231616 is an abundant number, since it is smaller than the sum of its proper divisors (929952384).

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

395231616 is a wasteful number, since it uses less digits than its factorization.

395231616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518 (or 500 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 395231616 is about 19880.4329932726. The cubic root of 395231616 is about 733.8667751384.

The spelling of 395231616 in words is "three hundred ninety-five million, two hundred thirty-one thousand, six hundred sixteen".