802278490 has 60 divisors (see below), whose sum is σ = 1594513494. Its totient is φ = 290636736.

The previous prime is 802278469. The next prime is 802278497. The reversal of 802278490 is 94872208.

It can be written as a sum of positive squares in 15 ways, for example, as 579701929 + 222576561 = 24077^2 + 14919^2 .

It is not an unprimeable number, because it can be changed into a prime (802278497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 15137304 + ... + 15137356.

Almost surely, 2^802278490 is an apocalyptic number.

802278490 is a deficient number, since it is larger than the sum of its proper divisors (792235004).

802278490 is an frugal number, since it uses more digits than its factorization.

802278490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 802278490 is about 28324.5210021282. The cubic root of 802278490 is about 929.1982491583.

Multiplying 802278490 by its sum of digits (40), we get a square (32091139600 = 179140²).

The spelling of 802278490 in words is "eight hundred two million, two hundred seventy-eight thousand, four hundred ninety".