1622420740 has 12 divisors (see below), whose sum is σ = 3407083596. Its totient is φ = 648968288.

The previous prime is 1622420731. The next prime is 1622420753. The reversal of 1622420740 is 470242261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 613850176 + 1008570564 = 24776^2 + 31758^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1622420699 and 1622420708.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 40560499 + ... + 40560538.

It is an arithmetic number, because the mean of its divisors is an integer number (283923633).

Almost surely, 2^1622420740 is an apocalyptic number.

1622420740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1622420740 is an abundant number, since it is smaller than the sum of its proper divisors (1784662856).

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

1622420740 is a wasteful number, since it uses less digits than its factorization.

1622420740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81121046 (or 81121044 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 1622420740 is about 40279.2842538196. The cubic root of 1622420740 is about 1175.0449935992.

The spelling of 1622420740 in words is "one billion, six hundred twenty-two million, four hundred twenty thousand, seven hundred forty".