1228397970240 has 672 divisors, whose sum is σ = 5024612296704. Its totient is φ = 279824025600.

The previous prime is 1228397970187. The next prime is 1228397970253. The reversal of 1228397970240 is 420797938221.

It is a happy number.

1228397970240 is a `hidden beast` number, since 1 + 2 + 2 + 8 + 397 + 9 + 7 + 0 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 167102565 + ... + 167109915.

It is an arithmetic number, because the mean of its divisors is an integer number (7477101632).

Almost surely, 2^{1228397970240} is an apocalyptic number.

1228397970240 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 1228397970240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2512306148352).

1228397970240 is an abundant number, since it is smaller than the sum of its proper divisors (3796214326464).

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

1228397970240 is an equidigital number, since it uses as much as digits as its factorization.

1228397970240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7697 (or 7675 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 1228397970240 in words is "one trillion, two hundred twenty-eight billion, three hundred ninety-seven million, nine hundred seventy thousand, two hundred forty".