1028577420 has 96 divisors (see below), whose sum is σ = 3446197440. Its totient is φ = 253186560.

The previous prime is 1028577419. The next prime is 1028577437. The reversal of 1028577420 is 247758201.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66241 + ... + 80280.

It is an arithmetic number, because the mean of its divisors is an integer number (35897890).

Almost surely, 2^1028577420 is an apocalyptic number.

1028577420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028577420 is an abundant number, since it is smaller than the sum of its proper divisors (2417620020).

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

1028577420 is a wasteful number, since it uses less digits than its factorization.

1028577420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146552 (or 146544 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 1028577420 is about 32071.4424371589. The cubic root of 1028577420 is about 1009.4364794255.

The spelling of 1028577420 in words is "one billion, twenty-eight million, five hundred seventy-seven thousand, four hundred twenty".