1357980 has 48 divisors (see below), whose sum is σ = 4097184. Its totient is φ = 334080.

The previous prime is 1357969. The next prime is 1358009. The reversal of 1357980 is 897531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91 + ... + 1650.

It is an arithmetic number, because the mean of its divisors is an integer number (85358).

2^1357980 is an apocalyptic number.

1357980 is a gapful number since it is divisible by the number (10) 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 1357980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2048592).

1357980 is an abundant number, since it is smaller than the sum of its proper divisors (2739204).

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

1357980 is a wasteful number, since it uses less digits than its factorization.

1357980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766 (or 1764 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 1357980 is about 1165.3239892837. The cubic root of 1357980 is about 110.7382844760.

The spelling of 1357980 in words is "one million, three hundred fifty-seven thousand, nine hundred eighty".