1940280 has 128 divisors (see below), whose sum is σ = 6566400. Its totient is φ = 456192.

The previous prime is 1940269. The next prime is 1940293. The reversal of 1940280 is 820491.

1940280 = T₁₉₁ + T₁₉₂ + ... + T₂₆₄.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1940280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52422 + ... + 52458.

It is an arithmetic number, because the mean of its divisors is an integer number (51300).

2^1940280 is an apocalyptic number.

1940280 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 1940280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3283200).

1940280 is an abundant number, since it is smaller than the sum of its proper divisors (4626120).

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

1940280 is a wasteful number, since it uses less digits than its factorization.

1940280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1940280 is about 1392.9393382341. The cubic root of 1940280 is about 124.7253704039.

The spelling of 1940280 in words is "one million, nine hundred forty thousand, two hundred eighty".