1723329540 has 48 divisors (see below), whose sum is σ = 5361471360. Its totient is φ = 459554400.

The previous prime is 1723329539. The next prime is 1723329541. The reversal of 1723329540 is 459233271.

1723329540 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1723329539) and next prime (1723329541).

It is a super-2 number, since 2×1723329540² = 5939729406873223200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1723329495 and 1723329504.

It is not an unprimeable number, because it can be changed into a prime (1723329541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1595136 + ... + 1596215.

It is an arithmetic number, because the mean of its divisors is an integer number (111697320).

Almost surely, 2^1723329540 is an apocalyptic number.

1723329540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1723329540 is an abundant number, since it is smaller than the sum of its proper divisors (3638141820).

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

1723329540 is a wasteful number, since it uses less digits than its factorization.

1723329540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191369 (or 3191361 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 1723329540 is about 41513.0044684795. The cubic root of 1723329540 is about 1198.9178995087.

The spelling of 1723329540 in words is "one billion, seven hundred twenty-three million, three hundred twenty-nine thousand, five hundred forty".