394852920 has 256 divisors, whose sum is σ = 1491886080. Its totient is φ = 81216000.

The previous prime is 394852907. The next prime is 394852933. The reversal of 394852920 is 29258493.

It is an interprime number because it is at equal distance from previous prime (394852907) and next prime (394852933).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1395099 + ... + 1395381.

It is an arithmetic number, because the mean of its divisors is an integer number (5827680).

Almost surely, 2^394852920 is an apocalyptic number.

394852920 is a gapful number since it is divisible by the number (30) 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 394852920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745943040).

394852920 is an abundant number, since it is smaller than the sum of its proper divisors (1097033160).

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

394852920 is a wasteful number, since it uses less digits than its factorization.

394852920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 394852920 is about 19870.9063708730. The cubic root of 394852920 is about 733.6323124335.

The spelling of 394852920 in words is "three hundred ninety-four million, eight hundred fifty-two thousand, nine hundred twenty".