1997386248 has 128 divisors (see below), whose sum is σ = 6175411200. Its totient is φ = 529286400.

The previous prime is 1997386243. The next prime is 1997386387. The reversal of 1997386248 is 8426837991.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (1997386243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49893 + ... + 80523.

It is an arithmetic number, because the mean of its divisors is an integer number (48245400).

Almost surely, 2^1997386248 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 1997386248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3087705600).

1997386248 is an abundant number, since it is smaller than the sum of its proper divisors (4178024952).

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

1997386248 is a wasteful number, since it uses less digits than its factorization.

1997386248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30683 (or 30679 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 57.

The square root of 1997386248 is about 44692.1273604200. The cubic root of 1997386248 is about 1259.3719570993.

The spelling of 1997386248 in words is "one billion, nine hundred ninety-seven million, three hundred eighty-six thousand, two hundred forty-eight".