215067420 has 48 divisors (see below), whose sum is σ = 669100320. Its totient is φ = 57351168.

The previous prime is 215067409. The next prime is 215067431. The reversal of 215067420 is 24760512.

215067420 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 (215067409) and next prime (215067431).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 198597 + ... + 199676.

It is an arithmetic number, because the mean of its divisors is an integer number (13939590).

Almost surely, 2^215067420 is an apocalyptic number.

215067420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215067420 is an abundant number, since it is smaller than the sum of its proper divisors (454032900).

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

215067420 is a wasteful number, since it uses less digits than its factorization.

215067420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398291 (or 398283 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 215067420 is about 14665.1771213307. The cubic root of 215067420 is about 599.1352542902.

The spelling of 215067420 in words is "two hundred fifteen million, sixty-seven thousand, four hundred twenty".