1021650340 has 24 divisors (see below), whose sum is σ = 2238747840. Its totient is φ = 390892128.

The previous prime is 1021650323. The next prime is 1021650347. The reversal of 1021650340 is 430561201.

1021650340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1021650347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110030 + ... + 1110949.

It is an arithmetic number, because the mean of its divisors is an integer number (93281160).

Almost surely, 2^1021650340 is an apocalyptic number.

1021650340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021650340 is an abundant number, since it is smaller than the sum of its proper divisors (1217097500).

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

1021650340 is a wasteful number, since it uses less digits than its factorization.

1021650340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221011 (or 2221009 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1021650340 is about 31963.2654777324. The cubic root of 1021650340 is about 1007.1653156254.

The spelling of 1021650340 in words is "one billion, twenty-one million, six hundred fifty thousand, three hundred forty".