1970730 has 48 divisors (see below), whose sum is σ = 5320224. Its totient is φ = 524880.

The previous prime is 1970729. The next prime is 1970743. The reversal of 1970730 is 370791.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1970694 and 1970703.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2025 + ... + 2835.

It is an arithmetic number, because the mean of its divisors is an integer number (110838).

2^1970730 is an apocalyptic number.

1970730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1970730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2660112).

1970730 is an abundant number, since it is smaller than the sum of its proper divisors (3349494).

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

1970730 is an equidigital number, since it uses as much as digits as its factorization.

1970730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 1323, while the sum is 27.

The square root of 1970730 is about 1403.8269124077. The cubic root of 1970730 is about 125.3744505078.

The spelling of 1970730 in words is "one million, nine hundred seventy thousand, seven hundred thirty".