2420621800 has 24 divisors (see below), whose sum is σ = 5627946150. Its totient is φ = 968248640.

The previous prime is 2420621783. The next prime is 2420621803. The reversal of 2420621800 is 81260242.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1651447044 + 769174756 = 40638^2 + 27734^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (2420621803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6051355 + ... + 6051754.

Almost surely, 2^2420621800 is an apocalyptic number.

2420621800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2420621800 is an abundant number, since it is smaller than the sum of its proper divisors (3207324350).

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

2420621800 is a wasteful number, since it uses less digits than its factorization.

2420621800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12103125 (or 12103116 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 2420621800 is about 49199.8150403027. The cubic root of 2420621800 is about 1342.6896670788.

The spelling of 2420621800 in words is "two billion, four hundred twenty million, six hundred twenty-one thousand, eight hundred".