2402920978 has 8 divisors (see below), whose sum is σ = 3604680972. Its totient is φ = 1201360656.

The previous prime is 2402920963. The next prime is 2402920979. The reversal of 2402920978 is 8790292042.

It can be written as a sum of positive squares in 2 ways, for example, as 2232279009 + 170641969 = 47247^2 + 13063^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2402920979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14925 + ... + 70912.

Almost surely, 2^2402920978 is an apocalyptic number.

2402920978 is a deficient number, since it is larger than the sum of its proper divisors (1201759994).

2402920978 is a wasteful number, since it uses less digits than its factorization.

2402920978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99836.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 2402920978 is about 49019.5978971676. The cubic root of 2402920978 is about 1339.4088463219.

The spelling of 2402920978 in words is "two billion, four hundred two million, nine hundred twenty thousand, nine hundred seventy-eight".