396140727840 has 192 divisors, whose sum is σ = 1465997968512. Its totient is φ = 88646860800.

The previous prime is 396140727833. The next prime is 396140727863. The reversal of 396140727840 is 48727041693.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2817001 + ... + 2954280.

It is an arithmetic number, because the mean of its divisors is an integer number (7635406086).

Almost surely, 2^396140727840 is an apocalyptic number.

396140727840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396140727840 is an abundant number, since it is smaller than the sum of its proper divisors (1069857240672).

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

396140727840 is a wasteful number, since it uses less digits than its factorization.

396140727840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771323 (or 5771315 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 396140727840 in words is "three hundred ninety-six billion, one hundred forty million, seven hundred twenty-seven thousand, eight hundred forty".