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902 = 21141

902 has 8 divisors (see below), whose sum is σ = 1512. Its totient is φ = 400.

The previous prime is 887. The next prime is 907. The reversal of 902 is 209.

902 is nontrivially palindromic in base 13.

902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

902 is an esthetic number in base 9 and base 13, because in such bases its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (11).

902 is an undulating number in base 9 and base 13.

It is a nialpdrome in base 11 and base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (907) by changing a digit.

902 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2 + ... + 42.

It is an arithmetic number, because the mean of its divisors is an integer number (189).

902 is a deficient number, since it is larger than the sum of its proper divisors (610).

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

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

The sum of its prime factors is 54.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 902 is about 30.0333148354. The cubic root of 902 is about 9.6620403282.

Adding to 902 its reverse (209), we get a palindrome (1111).

The spelling of 902 in words is "nine hundred two", and thus it is an aban number.

Divisors: 1 2 11 22 41 82 451 902