69381220 has 12 divisors (see below), whose sum is σ = 145700604. Its totient is φ = 27752480.

The previous prime is 69381173. The next prime is 69381229. The reversal of 69381220 is 2218396.

It can be written as a sum of positive squares in 2 ways, for example, as 11985444 + 57395776 = 3462^2 + 7576^2 .

It is not an unprimeable number, because it can be changed into a prime (69381229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734511 + ... + 1734550.

It is an arithmetic number, because the mean of its divisors is an integer number (12141717).

Almost surely, 2^69381220 is an apocalyptic number.

It is an amenable number.

69381220 is an abundant number, since it is smaller than the sum of its proper divisors (76319384).

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

69381220 is a wasteful number, since it uses less digits than its factorization.

69381220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469070 (or 3469068 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 69381220 is about 8329.5390028500. The cubic root of 69381220 is about 410.9105679362.

The spelling of 69381220 in words is "sixty-nine million, three hundred eighty-one thousand, two hundred twenty".