10503987 has 8 divisors (see below), whose sum is σ = 15082704. Its totient is φ = 6463968.

The previous prime is 10503959. The next prime is 10503989. The reversal of 10503987 is 78930501.

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

It is not a de Polignac number, because 10503987 - 2⁶ = 10503923 is a prime.

It is a super-2 number, since 2×10503987² = 220667485792338, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (10503989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134628 + ... + 134705.

It is an arithmetic number, because the mean of its divisors is an integer number (1885338).

Almost surely, 2^10503987 is an apocalyptic number.

10503987 is a deficient number, since it is larger than the sum of its proper divisors (4578717).

10503987 is a wasteful number, since it uses less digits than its factorization.

10503987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269349.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 10503987 is about 3240.9854982705. The cubic root of 10503987 is about 219.0036695868.

The spelling of 10503987 in words is "ten million, five hundred three thousand, nine hundred eighty-seven".