1423616 has 36 divisors (see below), whose sum is σ = 2918832. Its totient is φ = 692736.

The previous prime is 1423607. The next prime is 1423627. The reversal of 1423616 is 6163241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1423591 and 1423600.

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, 17111 + ... + 17193.

2^1423616 is an apocalyptic number.

1423616 is a gapful number since it is divisible by the number (16) 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 1423616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1459416).

1423616 is an abundant number, since it is smaller than the sum of its proper divisors (1495216).

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

1423616 is an frugal number, since it uses more digits than its factorization.

1423616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 152 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 1423616 is about 1193.1538040001. The cubic root of 1423616 is about 112.4944128913.

Adding to 1423616 its reverse (6163241), we get a palindrome (7586857).

The spelling of 1423616 in words is "one million, four hundred twenty-three thousand, six hundred sixteen".