2190209724 has 72 divisors (see below), whose sum is σ = 5842746000. Its totient is φ = 689865984.

The previous prime is 2190209719. The next prime is 2190209759. The reversal of 2190209724 is 4279020912.

2190209724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275842 + ... + 283670.

It is an arithmetic number, because the mean of its divisors is an integer number (81149250).

Almost surely, 2^2190209724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2190209724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2921373000).

2190209724 is an abundant number, since it is smaller than the sum of its proper divisors (3652536276).

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

2190209724 is a wasteful number, since it uses less digits than its factorization.

2190209724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8267 (or 8262 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2190209724 is about 46799.6765373437. The cubic root of 2190209724 is about 1298.6593128967.

The spelling of 2190209724 in words is "two billion, one hundred ninety million, two hundred nine thousand, seven hundred twenty-four".