215030420 has 24 divisors (see below), whose sum is σ = 492615648. Its totient is φ = 78192800.

The previous prime is 215030411. The next prime is 215030423. The reversal of 215030420 is 24030512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215030423) 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, 488486 + ... + 488925.

It is an arithmetic number, because the mean of its divisors is an integer number (20525652).

Almost surely, 2^215030420 is an apocalyptic number.

215030420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215030420 is an abundant number, since it is smaller than the sum of its proper divisors (277585228).

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

215030420 is a wasteful number, since it uses less digits than its factorization.

215030420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977431 (or 977429 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 215030420 is about 14663.9155753162. The cubic root of 215030420 is about 599.1008940947.

Adding to 215030420 its reverse (24030512), we get a palindrome (239060932).

The spelling of 215030420 in words is "two hundred fifteen million, thirty thousand, four hundred twenty".