145223760 has 80 divisors (see below), whose sum is σ = 491129280. Its totient is φ = 35205120.

The previous prime is 145223711. The next prime is 145223777. The reversal of 145223760 is 67322541.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24865 + ... + 30144.

It is an arithmetic number, because the mean of its divisors is an integer number (6139116).

Almost surely, 2^145223760 is an apocalyptic number.

145223760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145223760 is an abundant number, since it is smaller than the sum of its proper divisors (345905520).

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

145223760 is a wasteful number, since it uses less digits than its factorization.

145223760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55036 (or 55030 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 145223760 is about 12050.8821253882. The cubic root of 145223760 is about 525.6288880888.

The spelling of 145223760 in words is "one hundred forty-five million, two hundred twenty-three thousand, seven hundred sixty".