2820452978 has 16 divisors (see below), whose sum is σ = 4860119040. Its totient is φ = 1202501376.

The previous prime is 2820452969. The next prime is 2820453011. The reversal of 2820452978 is 8792540282.

It is a super-2 number, since 2×2820452978² = 15909910002218136968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519218 + ... + 524621.

It is an arithmetic number, because the mean of its divisors is an integer number (303757440).

Almost surely, 2^2820452978 is an apocalyptic number.

2820452978 is a deficient number, since it is larger than the sum of its proper divisors (2039666062).

2820452978 is a wasteful number, since it uses less digits than its factorization.

2820452978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044041.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 2820452978 is about 53107.9370527608. The cubic root of 2820452978 is about 1412.8832869885.

The spelling of 2820452978 in words is "two billion, eight hundred twenty million, four hundred fifty-two thousand, nine hundred seventy-eight".