145422284 has 96 divisors (see below), whose sum is σ = 330946560. Its totient is φ = 54438912.

The previous prime is 145422283. The next prime is 145422323. The reversal of 145422284 is 482224541.

It is a super-2 number, since 2×145422284² = 42295281367553312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145422284.

It is not an unprimeable number, because it can be changed into a prime (145422283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 404897 + ... + 405255.

It is an arithmetic number, because the mean of its divisors is an integer number (3447360).

Almost surely, 2^145422284 is an apocalyptic number.

145422284 is a gapful number since it is divisible by the number (14) 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 145422284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165473280).

145422284 is an abundant number, since it is smaller than the sum of its proper divisors (185524276).

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

145422284 is a wasteful number, since it uses less digits than its factorization.

145422284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 445 counting only the distinct ones).

The product of its digits is 20480, while the sum is 32.

The square root of 145422284 is about 12059.1162196904. The cubic root of 145422284 is about 525.8682943584.

The spelling of 145422284 in words is "one hundred forty-five million, four hundred twenty-two thousand, two hundred eighty-four".