1028021652 has 48 divisors (see below), whose sum is σ = 3045992320. Its totient is φ = 293720256.

The previous prime is 1028021623. The next prime is 1028021677. The reversal of 1028021652 is 2561208201.

It is a happy number.

1028021652 is a `hidden beast` number, since 1 + 0 + 2 + 8 + 0 + 2 + 1 + 652 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 679153 + ... + 680664.

Almost surely, 2^1028021652 is an apocalyptic number.

1028021652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1028021652 is an abundant number, since it is smaller than the sum of its proper divisors (2017970668).

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

1028021652 is a wasteful number, since it uses less digits than its factorization.

1028021652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359837 (or 1359829 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1028021652 is about 32062.7767356478. The cubic root of 1028021652 is about 1009.2546381251.

Adding to 1028021652 its reverse (2561208201), we get a palindrome (3589229853).

The spelling of 1028021652 in words is "one billion, twenty-eight million, twenty-one thousand, six hundred fifty-two".