152781222 has 32 divisors (see below), whose sum is σ = 344839680. Its totient is φ = 44700320.

The previous prime is 152781221. The next prime is 152781241. The reversal of 152781222 is 222187251.

It is a self number, because there is not a number n which added to its sum of digits gives 152781222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152781221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37998 + ... + 41825.

It is an arithmetic number, because the mean of its divisors is an integer number (10776240).

Almost surely, 2^152781222 is an apocalyptic number.

152781222 is an abundant number, since it is smaller than the sum of its proper divisors (192058458).

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

152781222 is a wasteful number, since it uses less digits than its factorization.

152781222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79868.

The product of its digits is 4480, while the sum is 30.

The square root of 152781222 is about 12360.4701366898. The cubic root of 152781222 is about 534.5930722277.

The spelling of 152781222 in words is "one hundred fifty-two million, seven hundred eighty-one thousand, two hundred twenty-two".