1052720 has 20 divisors (see below), whose sum is σ = 2447760. Its totient is φ = 421056.

The previous prime is 1052719. The next prime is 1052731. The reversal of 1052720 is 272501.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1052720² = 2216438796800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6500 + ... + 6659.

It is an arithmetic number, because the mean of its divisors is an integer number (122388).

2^1052720 is an apocalyptic number.

1052720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1052720 is an abundant number, since it is smaller than the sum of its proper divisors (1395040).

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

1052720 is a wasteful number, since it uses less digits than its factorization.

1052720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13172 (or 13166 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 1052720 is about 1026.0214422711. The cubic root of 1052720 is about 101.7273250247.

The spelling of 1052720 in words is "one million, fifty-two thousand, seven hundred twenty".