10287405 has 24 divisors (see below), whose sum is σ = 18494112. Its totient is φ = 5485968.

The previous prime is 10287401. The next prime is 10287439. The reversal of 10287405 is 50478201.

It is not a de Polignac number, because 10287405 - 2² = 10287401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10287401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3019 + ... + 5448.

It is an arithmetic number, because the mean of its divisors is an integer number (770588).

Almost surely, 2^10287405 is an apocalyptic number.

10287405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10287405 is a deficient number, since it is larger than the sum of its proper divisors (8206707).

10287405 is an frugal number, since it uses more digits than its factorization.

10287405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8487 (or 8475 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 10287405 is about 3207.3984785181. The cubic root of 10287405 is about 217.4879898243.

The spelling of 10287405 in words is "ten million, two hundred eighty-seven thousand, four hundred five".