394698240 has 240 divisors, whose sum is σ = 1406927808. Its totient is φ = 102187008.

The previous prime is 394698209. The next prime is 394698251. The reversal of 394698240 is 42896493.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 852249 + ... + 852711.

Almost surely, 2^394698240 is an apocalyptic number.

394698240 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 394698240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (703463904).

394698240 is an abundant number, since it is smaller than the sum of its proper divisors (1012229568).

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

394698240 is a wasteful number, since it uses less digits than its factorization.

394698240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 394698240 is about 19867.0138672122. The cubic root of 394698240 is about 733.5365020177.

The spelling of 394698240 in words is "three hundred ninety-four million, six hundred ninety-eight thousand, two hundred forty".