1351940 has 24 divisors (see below), whose sum is σ = 2963520. Its totient is φ = 517088.

The previous prime is 1351921. The next prime is 1351949. The reversal of 1351940 is 491531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (1351949) 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, 1010 + ... + 1929.

It is an arithmetic number, because the mean of its divisors is an integer number (123480).

2^1351940 is an apocalyptic number.

1351940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1351940 is an abundant number, since it is smaller than the sum of its proper divisors (1611580).

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

1351940 is a wasteful number, since it uses less digits than its factorization.

1351940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971 (or 2969 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1351940 is about 1162.7295472293. The cubic root of 1351940 is about 110.5738605172.

The spelling of 1351940 in words is "one million, three hundred fifty-one thousand, nine hundred forty".