1340693628 has 24 divisors (see below), whose sum is σ = 3128910288. Its totient is φ = 446808576.

The previous prime is 1340693623. The next prime is 1340693633. The reversal of 1340693628 is 8263960431.

It is an interprime number because it is at equal distance from previous prime (1340693623) and next prime (1340693633).

It is a self number, because there is not a number n which added to its sum of digits gives 1340693628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340693623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83500 + ... + 98252.

It is an arithmetic number, because the mean of its divisors is an integer number (130371262).

Almost surely, 2^1340693628 is an apocalyptic number.

It is an amenable number.

1340693628 is an abundant number, since it is smaller than the sum of its proper divisors (1788216660).

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

1340693628 is a wasteful number, since it uses less digits than its factorization.

1340693628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22333 (or 22331 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 1340693628 is about 36615.4834462144. The cubic root of 1340693628 is about 1102.6639641784.

The spelling of 1340693628 in words is "one billion, three hundred forty million, six hundred ninety-three thousand, six hundred twenty-eight".