1016388 has 30 divisors (see below), whose sum is σ = 2657886. Its totient is φ = 338688.

The previous prime is 1016371. The next prime is 1016399. The reversal of 1016388 is 8836101.

It can be written as a sum of positive squares in only one way, i.e., 1016064 + 324 = 1008^2 + 18^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1245 + ... + 1892.

2^1016388 is an apocalyptic number.

1016388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1016388 is an abundant number, since it is smaller than the sum of its proper divisors (1641498).

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

1016388 is a wasteful number, since it uses less digits than its factorization.

1016388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3153 (or 3142 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1016388 is about 1008.1607014757. The cubic root of 1016388 is about 100.5433094690.

The spelling of 1016388 in words is "one million, sixteen thousand, three hundred eighty-eight".