1397042288 has 60 divisors (see below), whose sum is σ = 2864266080. Its totient is φ = 660084544.

The previous prime is 1397042267. The next prime is 1397042329. The reversal of 1397042288 is 8822407931.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29724281 + ... + 29724327.

It is an arithmetic number, because the mean of its divisors is an integer number (47737768).

Almost surely, 2^1397042288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1397042288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432133040).

1397042288 is an abundant number, since it is smaller than the sum of its proper divisors (1467223792).

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

1397042288 is an frugal number, since it uses more digits than its factorization.

1397042288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 1397042288 is about 37377.0288813865. The cubic root of 1397042288 is about 1117.9005867166.

The spelling of 1397042288 in words is "one billion, three hundred ninety-seven million, forty-two thousand, two hundred eighty-eight".