1197256740 has 96 divisors (see below), whose sum is σ = 3472229376. Its totient is φ = 308031360.

The previous prime is 1197256681. The next prime is 1197256757. The reversal of 1197256740 is 476527911.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1197256692 and 1197256701.

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 31 ways as a sum of consecutive naturals, for example, 211345 + ... + 216935.

It is an arithmetic number, because the mean of its divisors is an integer number (36169056).

Almost surely, 2^1197256740 is an apocalyptic number.

1197256740 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 1197256740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1736114688).

1197256740 is an abundant number, since it is smaller than the sum of its proper divisors (2274972636).

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

1197256740 is a wasteful number, since it uses less digits than its factorization.

1197256740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5729 (or 5727 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 1197256740 is about 34601.3979486379. The cubic root of 1197256740 is about 1061.8481878037.

The spelling of 1197256740 in words is "one billion, one hundred ninety-seven million, two hundred fifty-six thousand, seven hundred forty".