1622420712 has 128 divisors (see below), whose sum is σ = 5075251200. Its totient is φ = 475761600.

The previous prime is 1622420677. The next prime is 1622420731. The reversal of 1622420712 is 2170242261.

1622420712 is a `hidden beast` number, since 1 + 622 + 4 + 20 + 7 + 12 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62643 + ... + 84669.

It is an arithmetic number, because the mean of its divisors is an integer number (39650400).

Almost surely, 2^1622420712 is an apocalyptic number.

1622420712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1622420712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2537625600).

1622420712 is an abundant number, since it is smaller than the sum of its proper divisors (3452830488).

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

1622420712 is a wasteful number, since it uses less digits than its factorization.

1622420712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22084 (or 22074 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1622420712 is about 40279.2839062464. The cubic root of 1622420712 is about 1175.0449868395.

Adding to 1622420712 its reverse (2170242261), we get a palindrome (3792662973).

The spelling of 1622420712 in words is "one billion, six hundred twenty-two million, four hundred twenty thousand, seven hundred twelve".