2420251778 has 32 divisors (see below), whose sum is σ = 4292935680. Its totient is φ = 1001425680.

The previous prime is 2420251777. The next prime is 2420251819. The reversal of 2420251778 is 8771520242.

It is a super-2 number, since 2×2420251778² = 11715237337824322568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2420251777) 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, 184175 + ... + 196877.

It is an arithmetic number, because the mean of its divisors is an integer number (134154240).

Almost surely, 2^2420251778 is an apocalyptic number.

2420251778 is a deficient number, since it is larger than the sum of its proper divisors (1872683902).

2420251778 is a wasteful number, since it uses less digits than its factorization.

2420251778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13182.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 2420251778 is about 49196.0544962703. The cubic root of 2420251778 is about 1342.6212480148.

The spelling of 2420251778 in words is "two billion, four hundred twenty million, two hundred fifty-one thousand, seven hundred seventy-eight".