5621028 has 48 divisors (see below), whose sum is σ = 15249024. Its totient is φ = 1578240.

The previous prime is 5621027. The next prime is 5621029. The reversal of 5621028 is 8201265.

It is an interprime number because it is at equal distance from previous prime (5621027) and next prime (5621029).

It is a junction number, because it is equal to n+sod(n) for n = 5620989 and 5621007.

It is not an unprimeable number, because it can be changed into a prime (5621023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4576 + ... + 5672.

It is an arithmetic number, because the mean of its divisors is an integer number (317688).

Almost surely, 2^5621028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5621028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7624512).

5621028 is an abundant number, since it is smaller than the sum of its proper divisors (9627996).

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

5621028 is a wasteful number, since it uses less digits than its factorization.

5621028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 5621028 is about 2370.8707261257. The cubic root of 5621028 is about 177.8027946855.

The spelling of 5621028 in words is "five million, six hundred twenty-one thousand, twenty-eight".