1402788 has 36 divisors (see below), whose sum is σ = 3414320. Its totient is φ = 448224.

The previous prime is 1402771. The next prime is 1402799. The reversal of 1402788 is 8872041.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10023 + ... + 10161.

2^1402788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1402788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1707160).

1402788 is an abundant number, since it is smaller than the sum of its proper divisors (2011532).

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

1402788 is a wasteful number, since it uses less digits than its factorization.

1402788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 1402788 is about 1184.3935156864. The cubic root of 1402788 is about 111.9431046057.

The spelling of 1402788 in words is "one million, four hundred two thousand, seven hundred eighty-eight".