395155512 has 72 divisors (see below), whose sum is σ = 1106043120. Its totient is φ = 127447200.

The previous prime is 395155477. The next prime is 395155513. The reversal of 395155512 is 215551593.

395155512 is a `hidden beast` number, since 3 + 95 + 1 + 55 + 512 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×395155512² = 312295757327964288, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395155513) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 66337 + ... + 72047.

It is an arithmetic number, because the mean of its divisors is an integer number (15361710).

Almost surely, 2^395155512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395155512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (553021560).

395155512 is an abundant number, since it is smaller than the sum of its proper divisors (710887608).

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

395155512 is a wasteful number, since it uses less digits than its factorization.

395155512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5785 (or 5747 counting only the distinct ones).

The product of its digits is 33750, while the sum is 36.

The square root of 395155512 is about 19878.5188583053. The cubic root of 395155512 is about 733.8196687667.

The spelling of 395155512 in words is "three hundred ninety-five million, one hundred fifty-five thousand, five hundred twelve".