103072785 has 32 divisors (see below), whose sum is σ = 175167360. Its totient is φ = 51575808.

The previous prime is 103072771. The next prime is 103072789. The reversal of 103072785 is 587270301.

It is not a de Polignac number, because 103072785 - 2⁶ = 103072721 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (103072789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157519 + ... + 158171.

It is an arithmetic number, because the mean of its divisors is an integer number (5473980).

Almost surely, 2^103072785 is an apocalyptic number.

103072785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103072785 is a deficient number, since it is larger than the sum of its proper divisors (72094575).

103072785 is a wasteful number, since it uses less digits than its factorization.

103072785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 103072785 is about 10152.4767914042. The cubic root of 103072785 is about 468.8652040397.

The spelling of 103072785 in words is "one hundred three million, seventy-two thousand, seven hundred eighty-five".