215470146 has 16 divisors (see below), whose sum is σ = 453621600. Its totient is φ = 68043168.

The previous prime is 215470133. The next prime is 215470159. The reversal of 215470146 is 641074512.

It is an interprime number because it is at equal distance from previous prime (215470133) and next prime (215470159).

It is a super-2 number, since 2×215470146² = 92854767634522632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944931 + ... + 945158.

It is an arithmetic number, because the mean of its divisors is an integer number (28351350).

Almost surely, 2^215470146 is an apocalyptic number.

215470146 is an abundant number, since it is smaller than the sum of its proper divisors (238151454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215470146 is a wasteful number, since it uses less digits than its factorization.

215470146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890113.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 215470146 is about 14678.9013894092. The cubic root of 215470146 is about 599.5089927405.

The spelling of 215470146 in words is "two hundred fifteen million, four hundred seventy thousand, one hundred forty-six".