145267992 has 80 divisors (see below), whose sum is σ = 430851960. Its totient is φ = 45570816.

The previous prime is 145267981. The next prime is 145267999. The reversal of 145267992 is 299762541.

It is a super-2 number, since 2×145267992² = 42205578999424128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145267999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4423 + ... + 17609.

Almost surely, 2^145267992 is an apocalyptic number.

145267992 is a gapful number since it is divisible by the number (12) 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 145267992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215425980).

145267992 is an abundant number, since it is smaller than the sum of its proper divisors (285583968).

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

145267992 is a wasteful number, since it uses less digits than its factorization.

145267992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13222 (or 13209 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 145267992 is about 12052.7172040167. The cubic root of 145267992 is about 525.6822477156.

The spelling of 145267992 in words is "one hundred forty-five million, two hundred sixty-seven thousand, nine hundred ninety-two".