2520021078 has 32 divisors (see below), whose sum is σ = 5929463520. Its totient is φ = 790594560.

The previous prime is 2520021071. The next prime is 2520021083. The reversal of 2520021078 is 8701200252.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520021071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1371643 + ... + 1373478.

It is an arithmetic number, because the mean of its divisors is an integer number (185295735).

Almost surely, 2^2520021078 is an apocalyptic number.

2520021078 is an abundant number, since it is smaller than the sum of its proper divisors (3409442442).

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

2520021078 is a wasteful number, since it uses less digits than its factorization.

2520021078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745149 (or 2745143 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 2520021078 is about 50199.8115335108. The cubic root of 2520021078 is about 1360.8222172715.

The spelling of 2520021078 in words is "two billion, five hundred twenty million, twenty-one thousand, seventy-eight".