1340921952 has 120 divisors (see below), whose sum is σ = 4079829600. Its totient is φ = 431536896.

The previous prime is 1340921951. The next prime is 1340921983. The reversal of 1340921952 is 2591290431.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340921951) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 66249 + ... + 84087.

It is an arithmetic number, because the mean of its divisors is an integer number (33998580).

Almost surely, 2^1340921952 is an apocalyptic number.

1340921952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340921952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2039914800).

1340921952 is an abundant number, since it is smaller than the sum of its proper divisors (2738907648).

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

1340921952 is a wasteful number, since it uses less digits than its factorization.

1340921952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17890 (or 17873 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1340921952 is about 36618.6011748128. The cubic root of 1340921952 is about 1102.7265562454.

The spelling of 1340921952 in words is "one billion, three hundred forty million, nine hundred twenty-one thousand, nine hundred fifty-two".