2021402320 has 80 divisors (see below), whose sum is σ = 5485506048. Its totient is φ = 678297600.

The previous prime is 2021402297. The next prime is 2021402353. The reversal of 2021402320 is 232041202.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2021402294 and 2021402303.

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, 12081 + ... + 64720.

Almost surely, 2^2021402320 is an apocalyptic number.

2021402320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021402320 is an abundant number, since it is smaller than the sum of its proper divisors (3464103728).

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

2021402320 is a wasteful number, since it uses less digits than its factorization.

2021402320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76868 (or 76862 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2021402320 is about 44960.0080071167. The cubic root of 2021402320 is about 1264.3993190361.

Adding to 2021402320 its reverse (232041202), we get a palindrome (2253443522).

The spelling of 2021402320 in words is "two billion, twenty-one million, four hundred two thousand, three hundred twenty".