1397230560 has 432 divisors, whose sum is σ = 5445930672. Its totient is φ = 338722560.

The previous prime is 1397230537. The next prime is 1397230579. The reversal of 1397230560 is 650327931.

1397230560 is a `hidden beast` number, since 1 + 3 + 97 + 2 + 3 + 0 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 127020955 + ... + 127020965.

It is an arithmetic number, because the mean of its divisors is an integer number (12606321).

Almost surely, 2^1397230560 is an apocalyptic number.

1397230560 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 1397230560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2722965336).

1397230560 is an abundant number, since it is smaller than the sum of its proper divisors (4048700112).

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

1397230560 is an frugal number, since it uses more digits than its factorization.

1397230560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 1397230560 is about 37379.5473487842. The cubic root of 1397230560 is about 1117.9508023107.

The spelling of 1397230560 in words is "one billion, three hundred ninety-seven million, two hundred thirty thousand, five hundred sixty".