2945490 has 32 divisors (see below), whose sum is σ = 7223040. Its totient is φ = 768384.

The previous prime is 2945489. The next prime is 2945497. The reversal of 2945490 is 945492.

It is a super-2 number, since 2×2945490² = 17351822680200, which contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2945497) 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, 366 + ... + 2454.

It is an arithmetic number, because the mean of its divisors is an integer number (225720).

2^2945490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2945490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3611520).

2945490 is an abundant number, since it is smaller than the sum of its proper divisors (4277550).

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

2945490 is a wasteful number, since it uses less digits than its factorization.

2945490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 2945490 is about 1716.2429897890. The cubic root of 2945490 is about 143.3460898448.

The spelling of 2945490 in words is "two million, nine hundred forty-five thousand, four hundred ninety".