1272830 has 16 divisors (see below), whose sum is σ = 2467584. Its totient is φ = 469920.

The previous prime is 1272827. The next prime is 1272833. The reversal of 1272830 is 382721.

1272830 = T₄₃₆ + T₄₃₇ + ... + T₄₄₈.

It is an interprime number because it is at equal distance from previous prime (1272827) and next prime (1272833).

It is a junction number, because it is equal to n+sod(n) for n = 1272796 and 1272805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272833) 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, 4766 + ... + 5025.

It is an arithmetic number, because the mean of its divisors is an integer number (154224).

2^1272830 is an apocalyptic number.

1272830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1272830 is a deficient number, since it is larger than the sum of its proper divisors (1194754).

1272830 is a wasteful number, since it uses less digits than its factorization.

1272830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9811.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1272830 is about 1128.1976777143. The cubic root of 1272830 is about 108.3735918750.

The spelling of 1272830 in words is "one million, two hundred seventy-two thousand, eight hundred thirty".