1236920 has 48 divisors (see below), whose sum is σ = 2984040. Its totient is φ = 461312.

The previous prime is 1236901. The next prime is 1236953. The reversal of 1236920 is 296321.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11507 + ... + 11613.

2^1236920 is an apocalyptic number.

1236920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1236920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1492020).

1236920 is an abundant number, since it is smaller than the sum of its proper divisors (1747120).

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

1236920 is a wasteful number, since it uses less digits than its factorization.

1236920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1236920 is about 1112.1690518981. The cubic root of 1236920 is about 107.3446828612.

The spelling of 1236920 in words is "one million, two hundred thirty-six thousand, nine hundred twenty".