1416640 has 56 divisors (see below), whose sum is σ = 3566160. Its totient is φ = 534528.

The previous prime is 1416631. The next prime is 1416641. The reversal of 1416640 is 466141.

1416640 = 35² + 36² + ... + 162².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1416641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5964 + ... + 6196.

2^1416640 is an apocalyptic number.

1416640 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 1416640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1783080).

1416640 is an abundant number, since it is smaller than the sum of its proper divisors (2149520).

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

1416640 is a wasteful number, since it uses less digits than its factorization.

1416640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1416640 is about 1190.2268691304. The cubic root of 1416640 is about 112.3103636454.

The spelling of 1416640 in words is "one million, four hundred sixteen thousand, six hundred forty".