2190723 has 8 divisors (see below), whose sum is σ = 2927808. Its totient is φ = 1457064.

The previous prime is 2190691. The next prime is 2190737. The reversal of 2190723 is 3270912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2190723 - 2⁵ = 2190691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2190693 and 2190702.

It is not an unprimeable number, because it can be changed into a prime (2190763) 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, 2040 + ... + 2922.

It is an arithmetic number, because the mean of its divisors is an integer number (365976).

2^2190723 is an apocalyptic number.

2190723 is a deficient number, since it is larger than the sum of its proper divisors (737085).

2190723 is an equidigital number, since it uses as much as digits as its factorization.

2190723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 2190723 is about 1480.1091175991. The cubic root of 2190723 is about 129.8760751979.

The spelling of 2190723 in words is "two million, one hundred ninety thousand, seven hundred twenty-three".