1720452 has 24 divisors (see below), whose sum is σ = 4036032. Its totient is φ = 570400.

The previous prime is 1720429. The next prime is 1720457. The reversal of 1720452 is 2540271.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1720457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3502 + ... + 3962.

It is an arithmetic number, because the mean of its divisors is an integer number (168168).

2^1720452 is an apocalyptic number.

1720452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1720452 is an abundant number, since it is smaller than the sum of its proper divisors (2315580).

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

1720452 is a wasteful number, since it uses less digits than its factorization.

1720452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 777 counting only the distinct ones).

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

The square root of 1720452 is about 1311.6600169251. The cubic root of 1720452 is about 119.8250227598.

The spelling of 1720452 in words is "one million, seven hundred twenty thousand, four hundred fifty-two".