2197390 has 16 divisors (see below), whose sum is σ = 4259808. Its totient is φ = 811296.

The previous prime is 2197387. The next prime is 2197409. The reversal of 2197390 is 937912.

2197390 = T₃₁₆ + T₃₁₇ + ... + T₃₅₄.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8322 + ... + 8581.

It is an arithmetic number, because the mean of its divisors is an integer number (266238).

2^2197390 is an apocalyptic number.

2197390 is a deficient number, since it is larger than the sum of its proper divisors (2062418).

2197390 is a wasteful number, since it uses less digits than its factorization.

2197390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16923.

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

The square root of 2197390 is about 1482.3596054939. The cubic root of 2197390 is about 130.0076918526.

The spelling of 2197390 in words is "two million, one hundred ninety-seven thousand, three hundred ninety".