1357224 has 64 divisors (see below), whose sum is σ = 3810240. Its totient is φ = 399360.

The previous prime is 1357201. The next prime is 1357333. The reversal of 1357224 is 4227531.

It is a Cunningham number, because it is equal to 1165²-1.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 1 + 3¹² + 5³ + 7⁷ + 2 + 2¹¹ + 4³ .

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 1357194 and 1357203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13944 + ... + 14040.

It is an arithmetic number, because the mean of its divisors is an integer number (59535).

2^1357224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1357224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1905120).

1357224 is an abundant number, since it is smaller than the sum of its proper divisors (2453016).

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

1357224 is a wasteful number, since it uses less digits than its factorization.

1357224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 166 counting only the distinct ones).

The product of its digits is 1680, while the sum is 24.

The square root of 1357224 is about 1164.9995708154. Note that the first 3 decimals coincide. The cubic root of 1357224 is about 110.7177309864.

The spelling of 1357224 in words is "one million, three hundred fifty-seven thousand, two hundred twenty-four".