22302420 has 48 divisors (see below), whose sum is σ = 71369088. Its totient is φ = 5097600.

The previous prime is 22302391. The next prime is 22302431. The reversal of 22302420 is 2420322.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22302420.

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, 26131 + ... + 26970.

It is an arithmetic number, because the mean of its divisors is an integer number (1486856).

Almost surely, 2^22302420 is an apocalyptic number.

22302420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22302420 is an abundant number, since it is smaller than the sum of its proper divisors (49066668).

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

22302420 is a wasteful number, since it uses less digits than its factorization.

22302420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53120 (or 53118 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 22302420 is about 4722.5438060435. The cubic root of 22302420 is about 281.4820228564.

Adding to 22302420 its reverse (2420322), we get a palindrome (24722742).

It can be divided in two parts, 22302 and 420, that added together give a palindrome (22722).

The spelling of 22302420 in words is "twenty-two million, three hundred two thousand, four hundred twenty".