2021427650 has 48 divisors (see below), whose sum is σ = 4151171808. Its totient is φ = 726192000.

The previous prime is 2021427647. The next prime is 2021427659. The reversal of 2021427650 is 567241202.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2021427659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23510 + ... + 67790.

It is an arithmetic number, because the mean of its divisors is an integer number (86482746).

Almost surely, 2^2021427650 is an apocalyptic number.

2021427650 is an abundant number, since it is smaller than the sum of its proper divisors (2129744158).

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

2021427650 is a wasteful number, since it uses less digits than its factorization.

2021427650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44387 (or 44382 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 2021427650 is about 44960.2897010239. The cubic root of 2021427650 is about 1264.4046003699.

Adding to 2021427650 its reverse (567241202), we get a palindrome (2588668852).

The spelling of 2021427650 in words is "two billion, twenty-one million, four hundred twenty-seven thousand, six hundred fifty".