1428779154 has 64 divisors (see below), whose sum is σ = 3197440512. Its totient is φ = 421977600.

The previous prime is 1428779153. The next prime is 1428779167. The reversal of 1428779154 is 4519778241.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1428779153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 427269 + ... + 430599.

It is an arithmetic number, because the mean of its divisors is an integer number (49960008).

Almost surely, 2^1428779154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1428779154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1598720256).

1428779154 is an abundant number, since it is smaller than the sum of its proper divisors (1768661358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1428779154 is a wasteful number, since it uses less digits than its factorization.

1428779154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511.

The product of its digits is 564480, while the sum is 48.

The square root of 1428779154 is about 37799.1951501616. The cubic root of 1428779154 is about 1126.3024662068.

The spelling of 1428779154 in words is "one billion, four hundred twenty-eight million, seven hundred seventy-nine thousand, one hundred fifty-four".