2690478 has 48 divisors (see below), whose sum is σ = 6754176. Its totient is φ = 758160.

The previous prime is 2690473. The next prime is 2690491. The reversal of 2690478 is 8740962.

2690478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2690473) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 16425 + ... + 16587.

It is an arithmetic number, because the mean of its divisors is an integer number (140712).

2^2690478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2690478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3377088).

2690478 is an abundant number, since it is smaller than the sum of its proper divisors (4063698).

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

2690478 is a wasteful number, since it uses less digits than its factorization.

2690478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2690478 is about 1640.2676610846. The cubic root of 2690478 is about 139.0837788336.

The spelling of 2690478 in words is "two million, six hundred ninety thousand, four hundred seventy-eight".