40215063 has 32 divisors (see below), whose sum is σ = 64512000. Its totient is φ = 21786336.

The previous prime is 40215037. The next prime is 40215073. The reversal of 40215063 is 36051204.

It is a happy number.

It is not a de Polignac number, because 40215063 - 2⁵ = 40215031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40215023) 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, 66838 + ... + 67436.

It is an arithmetic number, because the mean of its divisors is an integer number (2016000).

Almost surely, 2^40215063 is an apocalyptic number.

40215063 is a deficient number, since it is larger than the sum of its proper divisors (24296937).

40215063 is a wasteful number, since it uses less digits than its factorization.

40215063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 40215063 is about 6341.5347511466. The cubic root of 40215063 is about 342.6070150613.

Adding to 40215063 its reverse (36051204), we get a palindrome (76266267).

The spelling of 40215063 in words is "forty million, two hundred fifteen thousand, sixty-three".