10161278 has 4 divisors (see below), whose sum is σ = 15241920. Its totient is φ = 5080638.

The previous prime is 10161269. The next prime is 10161289. The reversal of 10161278 is 87216101.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between odd and even.

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 as a sum of consecutive naturals, namely, 2540318 + ... + 2540321.

It is an arithmetic number, because the mean of its divisors is an integer number (3810480).

Almost surely, 2^10161278 is an apocalyptic number.

10161278 is a deficient number, since it is larger than the sum of its proper divisors (5080642).

10161278 is an equidigital number, since it uses as much as digits as its factorization.

10161278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5080641.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 10161278 is about 3187.6759559278. The cubic root of 10161278 is about 216.5955074669.

Adding to 10161278 its reverse (87216101), we get a palindrome (97377379).

The spelling of 10161278 in words is "ten million, one hundred sixty-one thousand, two hundred seventy-eight".