397264208880 has 800 divisors, whose sum is σ = 1601194659840. Its totient is φ = 79732224000.

The previous prime is 397264208857. The next prime is 397264208881. The reversal of 397264208880 is 88802462793.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 397264208880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397264208881) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 762503020 + ... + 762503540.

Almost surely, 2^397264208880 is an apocalyptic number.

397264208880 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 397264208880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (800597329920).

397264208880 is an abundant number, since it is smaller than the sum of its proper divisors (1203930450960).

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

397264208880 is a wasteful number, since it uses less digits than its factorization.

397264208880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 57.

The spelling of 397264208880 in words is "three hundred ninety-seven billion, two hundred sixty-four million, two hundred eight thousand, eight hundred eighty".