40023215 has 16 divisors (see below), whose sum is σ = 51516000. Its totient is φ = 29757312.

The previous prime is 40023209. The next prime is 40023223. The reversal of 40023215 is 51232004.

It is a cyclic number.

It is not a de Polignac number, because 40023215 - 2⁸ = 40022959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40023193 and 40023202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1061 + ... + 9009.

It is an arithmetic number, because the mean of its divisors is an integer number (3219750).

Almost surely, 2^40023215 is an apocalyptic number.

40023215 is a deficient number, since it is larger than the sum of its proper divisors (11492785).

40023215 is a wasteful number, since it uses less digits than its factorization.

40023215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8026.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40023215 is about 6326.3903610195. The cubic root of 40023215 is about 342.0613383592.

Adding to 40023215 its reverse (51232004), we get a palindrome (91255219).

The spelling of 40023215 in words is "forty million, twenty-three thousand, two hundred fifteen".