1428178707 has 24 divisors (see below), whose sum is σ = 2158228800. Its totient is φ = 909121920.

The previous prime is 1428178699. The next prime is 1428178709. The reversal of 1428178707 is 7078718241.

It is not a de Polignac number, because 1428178707 - 2³ = 1428178699 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1428178709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23832 + ... + 58517.

It is an arithmetic number, because the mean of its divisors is an integer number (89926200).

Almost surely, 2^1428178707 is an apocalyptic number.

1428178707 is a deficient number, since it is larger than the sum of its proper divisors (730050093).

1428178707 is a wasteful number, since it uses less digits than its factorization.

1428178707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82443 (or 82440 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 45.

The square root of 1428178707 is about 37791.2517257632. The cubic root of 1428178707 is about 1126.1446672230.

The spelling of 1428178707 in words is "one billion, four hundred twenty-eight million, one hundred seventy-eight thousand, seven hundred seven".