1274538240 has 360 divisors, whose sum is σ = 4807978560. Its totient is φ = 321490944.

The previous prime is 1274538227. The next prime is 1274538257. The reversal of 1274538240 is 428354721.

It is a happy number.

1274538240 is a `hidden beast` number, since 1 + 274 + 5 + 382 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is a junction number, because it is equal to n+sod(n) for n = 1274538195 and 1274538204.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1969597 + ... + 1970243.

It is an arithmetic number, because the mean of its divisors is an integer number (13355496).

Almost surely, 2^1274538240 is an apocalyptic number.

1274538240 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 1274538240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2403989280).

1274538240 is an abundant number, since it is smaller than the sum of its proper divisors (3533440320).

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

1274538240 is an equidigital number, since it uses as much as digits as its factorization.

1274538240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 1274538240 is about 35700.6756238590. The cubic root of 1274538240 is about 1084.2205222118.

The spelling of 1274538240 in words is "one billion, two hundred seventy-four million, five hundred thirty-eight thousand, two hundred forty".