215130634 has 16 divisors (see below), whose sum is σ = 332817408. Its totient is φ = 104231232.

The previous prime is 215130623. The next prime is 215130637. The reversal of 215130634 is 436031512.

It is a junction number, because it is equal to n+sod(n) for n = 215130599 and 215130608.

It is not an unprimeable number, because it can be changed into a prime (215130637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1074 + ... + 20770.

It is an arithmetic number, because the mean of its divisors is an integer number (20801088).

Almost surely, 2^215130634 is an apocalyptic number.

215130634 is a deficient number, since it is larger than the sum of its proper divisors (117686774).

215130634 is a wasteful number, since it uses less digits than its factorization.

215130634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19869.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 215130634 is about 14667.3322045967. The cubic root of 215130634 is about 599.1939491030.

The spelling of 215130634 in words is "two hundred fifteen million, one hundred thirty thousand, six hundred thirty-four".