394501536 has 384 divisors, whose sum is σ = 1408942080. Its totient is φ = 105753600.

The previous prime is 394501531. The next prime is 394501577. The reversal of 394501536 is 635105493.

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

It is a self number, because there is not a number n which added to its sum of digits gives 394501536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394501531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3830061 + ... + 3830163.

It is an arithmetic number, because the mean of its divisors is an integer number (3669120).

Almost surely, 2^394501536 is an apocalyptic number.

394501536 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 394501536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (704471040).

394501536 is an abundant number, since it is smaller than the sum of its proper divisors (1014440544).

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

394501536 is a wasteful number, since it uses less digits than its factorization.

394501536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 394501536 is about 19862.0627327576. The cubic root of 394501536 is about 733.4146253317.

The spelling of 394501536 in words is "three hundred ninety-four million, five hundred one thousand, five hundred thirty-six".