1228750 has 20 divisors (see below), whose sum is σ = 2305512. Its totient is φ = 491000.

The previous prime is 1228741. The next prime is 1228763. The reversal of 1228750 is 578221.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 759 + ... + 1741.

2^1228750 is an apocalyptic number.

1228750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1228750 is a deficient number, since it is larger than the sum of its proper divisors (1076762).

1228750 is an frugal number, since it uses more digits than its factorization.

1228750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1228750 is about 1108.4899638698. The cubic root of 1228750 is about 107.1078192310.

The spelling of 1228750 in words is "one million, two hundred twenty-eight thousand, seven hundred fifty".