1951288 has 8 divisors (see below), whose sum is σ = 3658680. Its totient is φ = 975640.

The previous prime is 1951253. The next prime is 1951289. The reversal of 1951288 is 8821591.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1951289) by changing a digit.

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 as a sum of consecutive naturals, namely, 121948 + ... + 121963.

It is an arithmetic number, because the mean of its divisors is an integer number (457335).

2^1951288 is an apocalyptic number.

It is an amenable number.

1951288 is a deficient number, since it is larger than the sum of its proper divisors (1707392).

1951288 is a wasteful number, since it uses less digits than its factorization.

1951288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243917 (or 243913 counting only the distinct ones).

The product of its digits is 5760, while the sum is 34.

The square root of 1951288 is about 1396.8851062274. The cubic root of 1951288 is about 124.9607983738.

It can be divided in two parts, 19512 and 88, that added together give a square (19600 = 140²).

The spelling of 1951288 in words is "one million, nine hundred fifty-one thousand, two hundred eighty-eight".