1000720452 has 24 divisors (see below), whose sum is σ = 2335788000. Its totient is φ = 333462976.

The previous prime is 1000720439. The next prime is 1000720471. The reversal of 1000720452 is 2540270001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29299 + ... + 53477.

It is an arithmetic number, because the mean of its divisors is an integer number (97324500).

Almost surely, 2^1000720452 is an apocalyptic number.

1000720452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000720452 is an abundant number, since it is smaller than the sum of its proper divisors (1335067548).

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

1000720452 is a wasteful number, since it uses less digits than its factorization.

1000720452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27635 (or 27633 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1000720452 is about 31634.1658970171. The cubic root of 1000720452 is about 1000.2400930174.

Adding to 1000720452 its reverse (2540270001), we get a palindrome (3540990453).

The spelling of 1000720452 in words is "one billion, seven hundred twenty thousand, four hundred fifty-two".