1469640 has 64 divisors (see below), whose sum is σ = 4541760. Its totient is φ = 380160.

The previous prime is 1469627. The next prime is 1469641. The reversal of 1469640 is 469641.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1469598 and 1469607.

It is not an unprimeable number, because it can be changed into a prime (1469641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4275 + ... + 4605.

It is an arithmetic number, because the mean of its divisors is an integer number (70965).

2^1469640 is an apocalyptic number.

1469640 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 1469640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2270880).

1469640 is an abundant number, since it is smaller than the sum of its proper divisors (3072120).

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

1469640 is a wasteful number, since it uses less digits than its factorization.

1469640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1469640 is about 1212.2870947098. The cubic root of 1469640 is about 113.6938538676.

Subtracting from 1469640 its reverse (469641), we obtain a palindrome (999999).

The spelling of 1469640 in words is "one million, four hundred sixty-nine thousand, six hundred forty".