20222715 has 16 divisors (see below), whose sum is σ = 33472800. Its totient is φ = 10413312.

The previous prime is 20222689. The next prime is 20222723. The reversal of 20222715 is 51722202.

It is a happy number.

It is not a de Polignac number, because 20222715 - 2⁸ = 20222459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20222691 and 20222700.

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, 22810 + ... + 23679.

It is an arithmetic number, because the mean of its divisors is an integer number (2092050).

Almost surely, 2^20222715 is an apocalyptic number.

20222715 is a deficient number, since it is larger than the sum of its proper divisors (13250085).

20222715 is a wasteful number, since it uses less digits than its factorization.

20222715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46526.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 20222715 is about 4496.9673114222. The cubic root of 20222715 is about 272.4456138130.

Adding to 20222715 its reverse (51722202), we get a palindrome (71944917).

The spelling of 20222715 in words is "twenty million, two hundred twenty-two thousand, seven hundred fifteen".