2021077340 has 24 divisors (see below), whose sum is σ = 4251719472. Its totient is φ = 807010560.

The previous prime is 2021077339. The next prime is 2021077349. The reversal of 2021077340 is 437701202.

It is a super-2 number, since 2×2021077340² = 8169507228522951200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021077349) 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, 77069 + ... + 99908.

It is an arithmetic number, because the mean of its divisors is an integer number (177154978).

Almost surely, 2^2021077340 is an apocalyptic number.

2021077340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021077340 is an abundant number, since it is smaller than the sum of its proper divisors (2230642132).

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

2021077340 is a wasteful number, since it uses less digits than its factorization.

2021077340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177557 (or 177555 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 2021077340 is about 44956.3937610658. The cubic root of 2021077340 is about 1264.3315564226.

Adding to 2021077340 its reverse (437701202), we get a palindrome (2458778542).

The spelling of 2021077340 in words is "two billion, twenty-one million, seventy-seven thousand, three hundred forty".