1394520258240 has 672 divisors, whose sum is σ = 5012115204096. Its totient is φ = 355587563520.

The previous prime is 1394520258239. The next prime is 1394520258247. The reversal of 1394520258240 is 428520254931.

1394520258240 is a `hidden beast` number, since 1 + 3 + 9 + 4 + 5 + 20 + 2 + 582 + 40 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1394520258247) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2772405829 + ... + 2772406331.

It is an arithmetic number, because the mean of its divisors is an integer number (7458504768).

Almost surely, 2^{1394520258240} is an apocalyptic number.

1394520258240 is a gapful number since it is divisible by the number (10) 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 1394520258240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2506057602048).

1394520258240 is an abundant number, since it is smaller than the sum of its proper divisors (3617594945856).

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

1394520258240 is a wasteful number, since it uses less digits than its factorization.

1394520258240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 1394520258240 in words is "one trillion, three hundred ninety-four billion, five hundred twenty million, two hundred fifty-eight thousand, two hundred forty".