1920215028 has 12 divisors (see below), whose sum is σ = 4480501760. Its totient is φ = 640071672.

The previous prime is 1920215027. The next prime is 1920215029. The reversal of 1920215028 is 8205120291.

It is an interprime number because it is at equal distance from previous prime (1920215027) and next prime (1920215029).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1920214986 and 1920215004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920215023) 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 3 ways as a sum of consecutive naturals, for example, 80008948 + ... + 80008971.

Almost surely, 2^1920215028 is an apocalyptic number.

It is an amenable number.

1920215028 is an abundant number, since it is smaller than the sum of its proper divisors (2560286732).

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

1920215028 is a wasteful number, since it uses less digits than its factorization.

1920215028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160017926 (or 160017924 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 1920215028 is about 43820.2581918455. The cubic root of 1920215028 is about 1242.9393993989.

The spelling of 1920215028 in words is "one billion, nine hundred twenty million, two hundred fifteen thousand, twenty-eight".