1722402990044 has 24 divisors (see below), whose sum is σ = 3292051929600. Its totient is φ = 781999012080.

The previous prime is 1722402990043. The next prime is 1722402990047. The reversal of 1722402990044 is 4400992042271.

It is a super-2 number, since 2×1722402990044² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 1722402989977 and 1722402990004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722402990043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22747724 + ... + 22823315.

It is an arithmetic number, because the mean of its divisors is an integer number (137168830400).

Almost surely, 2^{1722402990044} is an apocalyptic number.

It is an amenable number.

1722402990044 is a deficient number, since it is larger than the sum of its proper divisors (1569648939556).

1722402990044 is a wasteful number, since it uses less digits than its factorization.

1722402990044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45571913 (or 45571911 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 1722402990044 in words is "one trillion, seven hundred twenty-two billion, four hundred two million, nine hundred ninety thousand, forty-four".