1225460 has 24 divisors (see below), whose sum is σ = 2612736. Its totient is φ = 482720.

The previous prime is 1225459. The next prime is 1225493. The reversal of 1225460 is 645221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989 + ... + 1851.

It is an arithmetic number, because the mean of its divisors is an integer number (108864).

2^1225460 is an apocalyptic number.

1225460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225460 is an abundant number, since it is smaller than the sum of its proper divisors (1387276).

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

1225460 is a wasteful number, since it uses less digits than its factorization.

1225460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1225460 is about 1107.0049683719. The cubic root of 1225460 is about 107.0121394210.

The spelling of 1225460 in words is "one million, two hundred twenty-five thousand, four hundred sixty".