215422634 has 16 divisors (see below), whose sum is σ = 376265088. Its totient is φ = 90581712.

The previous prime is 215422619. The next prime is 215422637. The reversal of 215422634 is 436224512.

It is a super-2 number, since 2×215422634² = 92813822478995912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215422597 and 215422606.

It is not an unprimeable number, because it can be changed into a prime (215422637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144422 + ... + 145905.

It is an arithmetic number, because the mean of its divisors is an integer number (23516568).

Almost surely, 2^215422634 is an apocalyptic number.

215422634 is a deficient number, since it is larger than the sum of its proper divisors (160842454).

215422634 is a wasteful number, since it uses less digits than its factorization.

215422634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290389.

The product of its digits is 11520, while the sum is 29.

The square root of 215422634 is about 14677.2829229391. The cubic root of 215422634 is about 599.4649248179.

The spelling of 215422634 in words is "two hundred fifteen million, four hundred twenty-two thousand, six hundred thirty-four".