1028449748 has 24 divisors (see below), whose sum is σ = 1949980032. Its totient is φ = 472719744.

The previous prime is 1028449739. The next prime is 1028449759. The reversal of 1028449748 is 8479448201.

It is a super-2 number, since 2×1028449748² = 2115417768322527008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172940 + ... + 178787.

It is an arithmetic number, because the mean of its divisors is an integer number (81249168).

Almost surely, 2^1028449748 is an apocalyptic number.

It is an amenable number.

1028449748 is a deficient number, since it is larger than the sum of its proper divisors (921530284).

1028449748 is a wasteful number, since it uses less digits than its factorization.

1028449748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351791 (or 351789 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 1028449748 is about 32069.4519441789. The cubic root of 1028449748 is about 1009.3947123194.

The spelling of 1028449748 in words is "one billion, twenty-eight million, four hundred forty-nine thousand, seven hundred forty-eight".