1970780 has 36 divisors (see below), whose sum is σ = 4816728. Its totient is φ = 675360.

The previous prime is 1970743. The next prime is 1970783. The reversal of 1970780 is 870791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26 + ... + 1985.

It is an arithmetic number, because the mean of its divisors is an integer number (133798).

2^1970780 is an apocalyptic number.

1970780 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 1970780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2408364).

1970780 is an abundant number, since it is smaller than the sum of its proper divisors (2845948).

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

1970780 is a wasteful number, since it uses less digits than its factorization.

1970780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034 (or 2025 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 1970780 is about 1403.8447207580. The cubic root of 1970780 is about 125.3755108035.

The spelling of 1970780 in words is "one million, nine hundred seventy thousand, seven hundred eighty".