1047272720 has 120 divisors (see below), whose sum is σ = 2676203712. Its totient is φ = 380889600.

The previous prime is 1047272663. The next prime is 1047272749. The reversal of 1047272720 is 272727401.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 959375 + ... + 960465.

Almost surely, 2^1047272720 is an apocalyptic number.

1047272720 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 1047272720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338101856).

1047272720 is an abundant number, since it is smaller than the sum of its proper divisors (1628930992).

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

1047272720 is a wasteful number, since it uses less digits than its factorization.

1047272720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 1047272720 is about 32361.5932858690. The cubic root of 1047272720 is about 1015.5155946150.

The spelling of 1047272720 in words is "one billion, forty-seven million, two hundred seventy-two thousand, seven hundred twenty".