2945830 has 16 divisors (see below), whose sum is σ = 5330304. Its totient is φ = 1172160.

The previous prime is 2945807. The next prime is 2945851. The reversal of 2945830 is 385492.

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

It is a junction number, because it is equal to n+sod(n) for n = 2945792 and 2945801.

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, 1570 + ... + 2890.

It is an arithmetic number, because the mean of its divisors is an integer number (333144).

2^2945830 is an apocalyptic number.

2945830 is a deficient number, since it is larger than the sum of its proper divisors (2384474).

2945830 is a wasteful number, since it uses less digits than its factorization.

2945830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2945830 is about 1716.3420405036. The cubic root of 2945830 is about 143.3516051462.

The spelling of 2945830 in words is "two million, nine hundred forty-five thousand, eight hundred thirty".