1147273740 has 96 divisors (see below), whose sum is σ = 3604124160. Its totient is φ = 302954688.

The previous prime is 1147273739. The next prime is 1147273759. The reversal of 1147273740 is 473727411.

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 = 1147273695 and 1147273704.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45307 + ... + 65933.

It is an arithmetic number, because the mean of its divisors is an integer number (37542960).

Almost surely, 2^1147273740 is an apocalyptic number.

1147273740 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 1147273740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1802062080).

1147273740 is an abundant number, since it is smaller than the sum of its proper divisors (2456850420).

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

1147273740 is a wasteful number, since it uses less digits than its factorization.

1147273740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20748 (or 20740 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 1147273740 is about 33871.4295535338. The cubic root of 1147273740 is about 1046.8609925385.

The spelling of 1147273740 in words is "one billion, one hundred forty-seven million, two hundred seventy-three thousand, seven hundred forty".