2400419978 has 32 divisors (see below), whose sum is σ = 4118349312. Its totient is φ = 1038668400.

The previous prime is 2400419969. The next prime is 2400420023. The reversal of 2400419978 is 8799140042.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95525 + ... + 118007.

It is an arithmetic number, because the mean of its divisors is an integer number (128698416).

Almost surely, 2^2400419978 is an apocalyptic number.

2400419978 is a deficient number, since it is larger than the sum of its proper divisors (1717929334).

2400419978 is a wasteful number, since it uses less digits than its factorization.

2400419978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22730.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 2400419978 is about 48994.0810506739. The cubic root of 2400419978 is about 1338.9439920293.

Subtracting 2400419978 from its reverse (8799140042), we obtain a square (6398720064 = 79992²).

The spelling of 2400419978 in words is "two billion, four hundred million, four hundred nineteen thousand, nine hundred seventy-eight".