215460620 has 48 divisors (see below), whose sum is σ = 466427808. Its totient is φ = 83543040.

The previous prime is 215460611. The next prime is 215460649. The reversal of 215460620 is 26064512.

215460620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 215460620.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363044 + ... + 363636.

It is an arithmetic number, because the mean of its divisors is an integer number (9717246).

Almost surely, 2^215460620 is an apocalyptic number.

215460620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215460620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233213904).

215460620 is an abundant number, since it is smaller than the sum of its proper divisors (250967188).

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

215460620 is a wasteful number, since it uses less digits than its factorization.

215460620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130 (or 1128 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 215460620 is about 14678.5769064988. The cubic root of 215460620 is about 599.5001577860.

The spelling of 215460620 in words is "two hundred fifteen million, four hundred sixty thousand, six hundred twenty".