145772724 has 12 divisors (see below), whose sum is σ = 340136384. Its totient is φ = 48590904.

The previous prime is 145772719. The next prime is 145772729. The reversal of 145772724 is 427277541.

It is an interprime number because it is at equal distance from previous prime (145772719) and next prime (145772729).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145772729) 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, 6073852 + ... + 6073875.

Almost surely, 2^145772724 is an apocalyptic number.

It is an amenable number.

145772724 is an abundant number, since it is smaller than the sum of its proper divisors (194363660).

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

145772724 is a wasteful number, since it uses less digits than its factorization.

145772724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12147734 (or 12147732 counting only the distinct ones).

The product of its digits is 109760, while the sum is 39.

The square root of 145772724 is about 12073.6375628888. The cubic root of 145772724 is about 526.2903696348.

The spelling of 145772724 in words is "one hundred forty-five million, seven hundred seventy-two thousand, seven hundred twenty-four".