1642427628 has 24 divisors (see below), whose sum is σ = 3849220032. Its totient is φ = 545063184.

The previous prime is 1642427603. The next prime is 1642427629. The reversal of 1642427628 is 8267242461.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1642427628.

It is not an unprimeable number, because it can be changed into a prime (1642427629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298750 + ... + 304197.

It is an arithmetic number, because the mean of its divisors is an integer number (160384168).

Almost surely, 2^1642427628 is an apocalyptic number.

It is an amenable number.

1642427628 is an abundant number, since it is smaller than the sum of its proper divisors (2206792404).

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

1642427628 is a wasteful number, since it uses less digits than its factorization.

1642427628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603181 (or 603179 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 1642427628 is about 40526.8753791851. The cubic root of 1642427628 is about 1179.8552987362.

The spelling of 1642427628 in words is "one billion, six hundred forty-two million, four hundred twenty-seven thousand, six hundred twenty-eight".