1002028554 has 12 divisors (see below), whose sum is σ = 2171061906. Its totient is φ = 334009512.

The previous prime is 1002028543. The next prime is 1002028567. The reversal of 1002028554 is 4558202001.

It is a happy number.

1002028554 is a `hidden beast` number, since 100 + 2 + 0 + 2 + 8 + 554 = 666.

It can be written as a sum of positive squares in only one way, i.e., 602948025 + 399080529 = 24555^2 + 19977^2 .

It is a super-2 number, since 2×1002028554² = 2008122446062661832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27834109 + ... + 27834144.

Almost surely, 2^1002028554 is an apocalyptic number.

1002028554 is an abundant number, since it is smaller than the sum of its proper divisors (1169033352).

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

1002028554 is a wasteful number, since it uses less digits than its factorization.

1002028554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55668261 (or 55668258 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1002028554 is about 31654.8346070549. The cubic root of 1002028554 is about 1000.6757279555.

The spelling of 1002028554 in words is "one billion, two million, twenty-eight thousand, five hundred fifty-four".