2520428988 has 192 divisors, whose sum is σ = 7545517056. Its totient is φ = 635904000.

The previous prime is 2520428951. The next prime is 2520429001. The reversal of 2520428988 is 8898240252.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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 63 ways as a sum of consecutive naturals, for example, 5467078 + ... + 5467538.

It is an arithmetic number, because the mean of its divisors is an integer number (39299568).

Almost surely, 2^2520428988 is an apocalyptic number.

2520428988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2520428988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3772758528).

2520428988 is an abundant number, since it is smaller than the sum of its proper divisors (5025088068).

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

2520428988 is a wasteful number, since it uses less digits than its factorization.

2520428988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The square root of 2520428988 is about 50203.8742329713. The cubic root of 2520428988 is about 1360.8956376948.

The spelling of 2520428988 in words is "two billion, five hundred twenty million, four hundred twenty-eight thousand, nine hundred eighty-eight".