1028651740 has 24 divisors (see below), whose sum is σ = 2177183232. Its totient is φ = 408219840.

The previous prime is 1028651711. The next prime is 1028651777. The reversal of 1028651740 is 471568201.

It is a junction number, because it is equal to n+sod(n) for n = 1028651696 and 1028651705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199951 + ... + 205030.

It is an arithmetic number, because the mean of its divisors is an integer number (90715968).

Almost surely, 2^1028651740 is an apocalyptic number.

1028651740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028651740 is an abundant number, since it is smaller than the sum of its proper divisors (1148531492).

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

1028651740 is a wasteful number, since it uses less digits than its factorization.

1028651740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405117 (or 405115 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 1028651740 is about 32072.6010794260. The cubic root of 1028651740 is about 1009.4607911629.

It can be divided in two parts, 10286 and 51740, that added together give a palindrome (62026).

The spelling of 1028651740 in words is "one billion, twenty-eight million, six hundred fifty-one thousand, seven hundred forty".