1428925377 has 32 divisors (see below), whose sum is σ = 2172764160. Its totient is φ = 827424000.

The previous prime is 1428925373. The next prime is 1428925411. The reversal of 1428925377 is 7735298241.

It is a happy number.

It is not a de Polignac number, because 1428925377 - 2² = 1428925373 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1428925373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71977 + ... + 89657.

It is an arithmetic number, because the mean of its divisors is an integer number (67898880).

Almost surely, 2^1428925377 is an apocalyptic number.

It is an amenable number.

1428925377 is a deficient number, since it is larger than the sum of its proper divisors (743838783).

1428925377 is a wasteful number, since it uses less digits than its factorization.

1428925377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17805.

The product of its digits is 846720, while the sum is 48.

The square root of 1428925377 is about 37801.1293085273. The cubic root of 1428925377 is about 1126.3408872852.

The spelling of 1428925377 in words is "one billion, four hundred twenty-eight million, nine hundred twenty-five thousand, three hundred seventy-seven".