1428794278 has 32 divisors (see below), whose sum is σ = 2243738880. Its totient is φ = 681600000.

The previous prime is 1428794249. The next prime is 1428794333. The reversal of 1428794278 is 8724978241.

It is a congruent number.

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, 2510778 + ... + 2511346.

It is an arithmetic number, because the mean of its divisors is an integer number (70116840).

Almost surely, 2^1428794278 is an apocalyptic number.

1428794278 is a deficient number, since it is larger than the sum of its proper divisors (814944602).

1428794278 is a wasteful number, since it uses less digits than its factorization.

1428794278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104.

The product of its digits is 1806336, while the sum is 52.

The square root of 1428794278 is about 37799.3952068019. The cubic root of 1428794278 is about 1126.3064402612.

The spelling of 1428794278 in words is "one billion, four hundred twenty-eight million, seven hundred ninety-four thousand, two hundred seventy-eight".