1236720 has 40 divisors (see below), whose sum is σ = 3834576. Its totient is φ = 329728.

The previous prime is 1236713. The next prime is 1236727. The reversal of 1236720 is 276321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1236713) and next prime (1236727).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1236727) 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, 2337 + ... + 2816.

2^1236720 is an apocalyptic number.

1236720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1236720 is an abundant number, since it is smaller than the sum of its proper divisors (2597856).

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

1236720 is a wasteful number, since it uses less digits than its factorization.

1236720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5169 (or 5163 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 1236720 is about 1112.0791338749. The cubic root of 1236720 is about 107.3388969592.

The spelling of 1236720 in words is "one million, two hundred thirty-six thousand, seven hundred twenty".