28420362 has 64 divisors (see below), whose sum is σ = 67858560. Its totient is φ = 8785152.

The previous prime is 28420309. The next prime is 28420363. The reversal of 28420362 is 26302482.

28420362 is a `hidden beast` number, since 284 + 20 + 362 = 666.

It is a super-2 number, since 2×28420362² = 1615433952422088, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (28420363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76008 + ... + 76380.

It is an arithmetic number, because the mean of its divisors is an integer number (1060290).

Almost surely, 2^28420362 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28420362, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33929280).

28420362 is an abundant number, since it is smaller than the sum of its proper divisors (39438198).

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

28420362 is a wasteful number, since it uses less digits than its factorization.

28420362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 28420362 is about 5331.0751260885. The cubic root of 28420362 is about 305.1709585325.

It can be divided in two parts, 28420 and 362, that added together give a palindrome (28782).

The spelling of 28420362 in words is "twenty-eight million, four hundred twenty thousand, three hundred sixty-two".