2578376220 has 48 divisors (see below), whose sum is σ = 8250805248. Its totient is φ = 589343040.

The previous prime is 2578376201. The next prime is 2578376221. The reversal of 2578376220 is 226738752.

It is a super-2 number, since 2×2578376220² = 13296047863722976800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578376221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3069076 + ... + 3069915.

It is an arithmetic number, because the mean of its divisors is an integer number (171891776).

Almost surely, 2^2578376220 is an apocalyptic number.

2578376220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2578376220 is an abundant number, since it is smaller than the sum of its proper divisors (5672429028).

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

2578376220 is a wasteful number, since it uses less digits than its factorization.

2578376220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6139010 (or 6139008 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 2578376220 is about 50777.7138122622. The cubic root of 2578376220 is about 1371.2461746205.

The spelling of 2578376220 in words is "two billion, five hundred seventy-eight million, three hundred seventy-six thousand, two hundred twenty".