2197930 has 32 divisors (see below), whose sum is σ = 4790016. Its totient is φ = 708864.

The previous prime is 2197919. The next prime is 2197933. The reversal of 2197930 is 397912.

It is a junction number, because it is equal to n+sod(n) for n = 2197892 and 2197901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197933) 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, 267 + ... + 2113.

It is an arithmetic number, because the mean of its divisors is an integer number (149688).

2^2197930 is an apocalyptic number.

2197930 is an abundant number, since it is smaller than the sum of its proper divisors (2592086).

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

2197930 is a wasteful number, since it uses less digits than its factorization.

2197930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 2197930 is about 1482.5417363434. The cubic root of 2197930 is about 130.0183406076.

The spelling of 2197930 in words is "two million, one hundred ninety-seven thousand, nine hundred thirty".