1402780 has 12 divisors (see below), whose sum is σ = 2945880. Its totient is φ = 561104.

The previous prime is 1402771. The next prime is 1402799. The reversal of 1402780 is 872041.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35050 + ... + 35089.

It is an arithmetic number, because the mean of its divisors is an integer number (245490).

2^1402780 is an apocalyptic number.

1402780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402780 is an abundant number, since it is smaller than the sum of its proper divisors (1543100).

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

1402780 is a wasteful number, since it uses less digits than its factorization.

1402780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70148 (or 70146 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1402780 is about 1184.3901384257. The cubic root of 1402780 is about 111.9428918042.

The spelling of 1402780 in words is "one million, four hundred two thousand, seven hundred eighty".