2978852640 has 48 divisors (see below), whose sum is σ = 9383387328. Its totient is φ = 794360576.

The previous prime is 2978852633. The next prime is 2978852671. The reversal of 2978852640 is 462588792.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3102492 + ... + 3103451.

It is an arithmetic number, because the mean of its divisors is an integer number (195487236).

Almost surely, 2^2978852640 is an apocalyptic number.

2978852640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2978852640 is an abundant number, since it is smaller than the sum of its proper divisors (6404534688).

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

2978852640 is a wasteful number, since it uses less digits than its factorization.

2978852640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6205961 (or 6205953 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 2978852640 is about 54578.8662395986. The cubic root of 2978852640 is about 1438.8527127109.

It can be divided in two parts, 29788 and 52640, that added together give a palindrome (82428).

The spelling of 2978852640 in words is "two billion, nine hundred seventy-eight million, eight hundred fifty-two thousand, six hundred forty".