2021532078 has 16 divisors (see below), whose sum is σ = 4045599360. Its totient is φ = 673421496.

The previous prime is 2021532049. The next prime is 2021532091. The reversal of 2021532078 is 8702351202.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 95188 + ... + 114471.

It is an arithmetic number, because the mean of its divisors is an integer number (252849960).

Almost surely, 2^2021532078 is an apocalyptic number.

2021532078 is an abundant number, since it is smaller than the sum of its proper divisors (2024067282).

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

2021532078 is a wasteful number, since it uses less digits than its factorization.

2021532078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211271.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2021532078 is about 44961.4510219588. The cubic root of 2021532078 is about 1264.4263732606.

The spelling of 2021532078 in words is "two billion, twenty-one million, five hundred thirty-two thousand, seventy-eight".