145269872 has 20 divisors (see below), whose sum is σ = 307048056. Its totient is φ = 66031680.

The previous prime is 145269871. The next prime is 145269899. The reversal of 145269872 is 278962541.

It is a happy number.

It is a super-2 number, since 2×145269872² = 42206671421792768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145269871) 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, 412523 + ... + 412874.

Almost surely, 2^145269872 is an apocalyptic number.

It is an amenable number.

145269872 is an abundant number, since it is smaller than the sum of its proper divisors (161778184).

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

145269872 is a wasteful number, since it uses less digits than its factorization.

145269872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825416 (or 825410 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 145269872 is about 12052.7951944767. The cubic root of 145269872 is about 525.6845154287.

The spelling of 145269872 in words is "one hundred forty-five million, two hundred sixty-nine thousand, eight hundred seventy-two".