1253620 has 24 divisors (see below), whose sum is σ = 2772000. Its totient is φ = 474912.

The previous prime is 1253599. The next prime is 1253621. The reversal of 1253620 is 263521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253621) 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, 1270 + ... + 2029.

It is an arithmetic number, because the mean of its divisors is an integer number (115500).

2^1253620 is an apocalyptic number.

1253620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253620 is an abundant number, since it is smaller than the sum of its proper divisors (1518380).

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

1253620 is a wasteful number, since it uses less digits than its factorization.

1253620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327 (or 3325 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1253620 is about 1119.6517315666. The cubic root of 1253620 is about 107.8256216613.

Subtracting from 1253620 its reverse (263521), we obtain a palindrome (990099).

The spelling of 1253620 in words is "one million, two hundred fifty-three thousand, six hundred twenty".