2420778252 has 48 divisors (see below), whose sum is σ = 5792284512. Its totient is φ = 786424320.

The previous prime is 2420778247. The next prime is 2420778259. The reversal of 2420778252 is 2528770242.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2420778252.

It is not an unprimeable number, because it can be changed into a prime (2420778259) 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, 626358 + ... + 630210.

It is an arithmetic number, because the mean of its divisors is an integer number (120672594).

Almost surely, 2^2420778252 is an apocalyptic number.

It is an amenable number.

2420778252 is an abundant number, since it is smaller than the sum of its proper divisors (3371506260).

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

2420778252 is a wasteful number, since it uses less digits than its factorization.

2420778252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178 (or 5176 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 39.

The square root of 2420778252 is about 49201.4049799393. The cubic root of 2420778252 is about 1342.7185938003.

The spelling of 2420778252 in words is "two billion, four hundred twenty million, seven hundred seventy-eight thousand, two hundred fifty-two".