215101460 has 24 divisors (see below), whose sum is σ = 516243840. Its totient is φ = 73749024.

The previous prime is 215101441. The next prime is 215101501. The reversal of 215101460 is 64101512.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 768080 + ... + 768359.

It is an arithmetic number, because the mean of its divisors is an integer number (21510160).

Almost surely, 2^215101460 is an apocalyptic number.

215101460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215101460 is an abundant number, since it is smaller than the sum of its proper divisors (301142380).

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

215101460 is a wasteful number, since it uses less digits than its factorization.

215101460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536455 (or 1536453 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 215101460 is about 14666.3376478247. The cubic root of 215101460 is about 599.1668621896.

Adding to 215101460 its reverse (64101512), we get a palindrome (279202972).

The spelling of 215101460 in words is "two hundred fifteen million, one hundred one thousand, four hundred sixty".