1722409452 has 72 divisors (see below), whose sum is σ = 4397165136. Its totient is φ = 568458624.

The previous prime is 1722409411. The next prime is 1722409453. The reversal of 1722409452 is 2549042271.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1722409453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2160718 + ... + 2161514.

It is an arithmetic number, because the mean of its divisors is an integer number (61071738).

Almost surely, 2^1722409452 is an apocalyptic number.

1722409452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1722409452 is an abundant number, since it is smaller than the sum of its proper divisors (2674755684).

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

1722409452 is a wasteful number, since it uses less digits than its factorization.

1722409452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327 (or 1322 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1722409452 is about 41501.9210639700. The cubic root of 1722409452 is about 1198.7044935559.

The spelling of 1722409452 in words is "one billion, seven hundred twenty-two million, four hundred nine thousand, four hundred fifty-two".