10216405 has 8 divisors (see below), whose sum is σ = 12980952. Its totient is φ = 7692288.

The previous prime is 10216397. The next prime is 10216441. The reversal of 10216405 is 50461201.

It can be written as a sum of positive squares in 4 ways, for example, as 736164 + 9480241 = 858^2 + 3079^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10216405 - 2³ = 10216397 is a prime.

It is a super-2 number, since 2×10216405² = 208749862248050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60012 + ... + 60181.

It is an arithmetic number, because the mean of its divisors is an integer number (1622619).

Almost surely, 2^10216405 is an apocalyptic number.

It is an amenable number.

10216405 is a deficient number, since it is larger than the sum of its proper divisors (2764547).

10216405 is a wasteful number, since it uses less digits than its factorization.

10216405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120215.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 10216405 is about 3196.3111550661. The cubic root of 10216405 is about 216.9864928202.

Adding to 10216405 its reverse (50461201), we get a palindrome (60677606).

The spelling of 10216405 in words is "ten million, two hundred sixteen thousand, four hundred five".