1970280 has 96 divisors (see below), whose sum is σ = 6912360. Its totient is φ = 483840.

The previous prime is 1970279. The next prime is 1970291. The reversal of 1970280 is 820791.

It can be written as a sum of positive squares in 4 ways, for example, as 544644 + 1425636 = 738^2 + 1194^2 .

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, 4470 + ... + 4890.

2^1970280 is an apocalyptic number.

1970280 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 1970280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3456180).

1970280 is an abundant number, since it is smaller than the sum of its proper divisors (4942080).

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

1970280 is a wasteful number, since it uses less digits than its factorization.

1970280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1970280 is about 1403.6666270878. Note that the first 4 decimals coincide. The cubic root of 1970280 is about 125.3649070396.

The spelling of 1970280 in words is "one million, nine hundred seventy thousand, two hundred eighty".