2790778402 has 16 divisors (see below), whose sum is σ = 4368851640. Its totient is φ = 1335346432.

The previous prime is 2790778399. The next prime is 2790778421. The reversal of 2790778402 is 2048770972.

2790778402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2088581401 + 702197001 = 45701^2 + 26499^2 .

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, 206353 + ... + 219460.

Almost surely, 2^2790778402 is an apocalyptic number.

2790778402 is a deficient number, since it is larger than the sum of its proper divisors (1578073238).

2790778402 is a wasteful number, since it uses less digits than its factorization.

2790778402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425957.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 2790778402 is about 52827.8184482380. The cubic root of 2790778402 is about 1407.9107266406.

The spelling of 2790778402 in words is "two billion, seven hundred ninety million, seven hundred seventy-eight thousand, four hundred two".