2978090 has 8 divisors (see below), whose sum is σ = 5360580. Its totient is φ = 1191232.

The previous prime is 2978089. The next prime is 2978113. The reversal of 2978090 is 908792.

2978090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2765569 + 212521 = 1663^2 + 461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2978090.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148895 + ... + 148914.

2^2978090 is an apocalyptic number.

2978090 is a deficient number, since it is larger than the sum of its proper divisors (2382490).

2978090 is a wasteful number, since it uses less digits than its factorization.

2978090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297816.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 2978090 is about 1725.7143448439. The cubic root of 2978090 is about 143.8729911482.

The spelling of 2978090 in words is "two million, nine hundred seventy-eight thousand, ninety".