2145470 has 16 divisors (see below), whose sum is σ = 3916080. Its totient is φ = 846144.

The previous prime is 2145469. The next prime is 2145487. The reversal of 2145470 is 745412.

It is an alternating number because its digits alternate between even and odd.

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, 740 + ... + 2199.

It is an arithmetic number, because the mean of its divisors is an integer number (244755).

2^2145470 is an apocalyptic number.

2145470 is a deficient number, since it is larger than the sum of its proper divisors (1770610).

2145470 is a wasteful number, since it uses less digits than its factorization.

2145470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3019.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 2145470 is about 1464.7422981535. The cubic root of 2145470 is about 128.9755777736.

The spelling of 2145470 in words is "two million, one hundred forty-five thousand, four hundred seventy".