215802468 has 216 divisors, whose sum is σ = 690161472. Its totient is φ = 58677696.

The previous prime is 215802467. The next prime is 215802469. The reversal of 215802468 is 864208512.

215802468 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (215802467) and next prime (215802469).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215802467) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1095346 + ... + 1095542.

It is an arithmetic number, because the mean of its divisors is an integer number (3195192).

Almost surely, 2^215802468 is an apocalyptic number.

215802468 is a gapful number since it is divisible by the number (28) 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 215802468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345080736).

215802468 is an abundant number, since it is smaller than the sum of its proper divisors (474359004).

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

215802468 is a wasteful number, since it uses less digits than its factorization.

215802468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 215802468 is about 14690.2167444868. The cubic root of 215802468 is about 599.8170442176.

The spelling of 215802468 in words is "two hundred fifteen million, eight hundred two thousand, four hundred sixty-eight".