1029428 has 12 divisors (see below), whose sum is σ = 1845732. Its totient is φ = 502080.

The previous prime is 1029409. The next prime is 1029433. The reversal of 1029428 is 8249201.

It can be written as a sum of positive squares in 2 ways, for example, as 550564 + 478864 = 742^2 + 692^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1029397 and 1029406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2975 + ... + 3302.

It is an arithmetic number, because the mean of its divisors is an integer number (153811).

2^1029428 is an apocalyptic number.

It is an amenable number.

1029428 is a deficient number, since it is larger than the sum of its proper divisors (816304).

1029428 is a wasteful number, since it uses less digits than its factorization.

1029428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6322 (or 6320 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1029428 is about 1014.6073132005. The cubic root of 1029428 is about 100.9714653241.

The spelling of 1029428 in words is "one million, twenty-nine thousand, four hundred twenty-eight".