1400780 has 12 divisors (see below), whose sum is σ = 2941680. Its totient is φ = 560304.

The previous prime is 1400753. The next prime is 1400801. The reversal of 1400780 is 870041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 70039 = 1400780 / (1 + 4 + 0 + 0 + 7 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35000 + ... + 35039.

It is an arithmetic number, because the mean of its divisors is an integer number (245140).

2^1400780 is an apocalyptic number.

1400780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400780 is an abundant number, since it is smaller than the sum of its proper divisors (1540900).

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

1400780 is a wasteful number, since it uses less digits than its factorization.

1400780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70048 (or 70046 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1400780 is about 1183.5455208821. The cubic root of 1400780 is about 111.8896660028.

The spelling of 1400780 in words is "one million, four hundred thousand, seven hundred eighty".