1028224057 has 4 divisors (see below), whose sum is σ = 1175113216. Its totient is φ = 881334900.

The previous prime is 1028224051. The next prime is 1028224061. The reversal of 1028224057 is 7504228201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7504228201 = 19 ⋅394959379.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028224057 is a prime.

It is a super-3 number, since 3×1028224057³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028224051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73444569 + ... + 73444582.

It is an arithmetic number, because the mean of its divisors is an integer number (293778304).

Almost surely, 2^1028224057 is an apocalyptic number.

It is an amenable number.

1028224057 is a deficient number, since it is larger than the sum of its proper divisors (146889159).

1028224057 is an equidigital number, since it uses as much as digits as its factorization.

1028224057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146889158.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 1028224057 is about 32065.9329663118. The cubic root of 1028224057 is about 1009.3208704460.

The spelling of 1028224057 in words is "one billion, twenty-eight million, two hundred twenty-four thousand, fifty-seven".