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1028941057 = 31103322249
BaseRepresentation
bin111101010101000…
…110010100000001
32122201010121210001
4331111012110001
54101402103212
6250033440001
734332566104
oct7525062401
92581117701
101028941057
114888a0711
12248710001
13135231181
149a92273b
15604eb657
hex3d546501

1028941057 has 8 divisors (see below), whose sum is σ = 1072448000. Its totient is φ = 986078880.

The previous prime is 1028941021. The next prime is 1028941063. The reversal of 1028941057 is 7501498201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1028941057 - 227 = 894723329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028941007) 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 7 ways as a sum of consecutive naturals, for example, 157932 + ... + 164317.

It is an arithmetic number, because the mean of its divisors is an integer number (134056000).

Almost surely, 21028941057 is an apocalyptic number.

It is an amenable number.

1028941057 is a deficient number, since it is larger than the sum of its proper divisors (43506943).

1028941057 is a wasteful number, since it uses less digits than its factorization.

1028941057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322383.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1028941057 is about 32077.1111074548. Note that the first 4 decimals coincide. The cubic root of 1028941057 is about 1009.5554220860. Note that the first 3 decimals are identical.

The spelling of 1028941057 in words is "one billion, twenty-eight million, nine hundred forty-one thousand, fifty-seven".

Divisors: 1 31 103 3193 322249 9989719 33191647 1028941057