3278640390 has 32 divisors (see below), whose sum is σ = 7870576896. Its totient is φ = 874099680.

The previous prime is 3278640389. The next prime is 3278640413. The reversal of 3278640390 is 930468723.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152869 + ... + 172991.

It is an arithmetic number, because the mean of its divisors is an integer number (245955528).

Almost surely, 2^3278640390 is an apocalyptic number.

3278640390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3278640390 is an abundant number, since it is smaller than the sum of its proper divisors (4591936506).

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

3278640390 is a wasteful number, since it uses less digits than its factorization.

3278640390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25564.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 3278640390 is about 57259.4131126053. The cubic root of 3278640390 is about 1485.5864454711.

The spelling of 3278640390 in words is "three billion, two hundred seventy-eight million, six hundred forty thousand, three hundred ninety".