145497280 has 28 divisors (see below), whose sum is σ = 346466160. Its totient is φ = 58198784.

The previous prime is 145497227. The next prime is 145497299. The reversal of 145497280 is 82794541.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227020 + ... + 227659.

Almost surely, 2^145497280 is an apocalyptic number.

145497280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145497280 is an abundant number, since it is smaller than the sum of its proper divisors (200968880).

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

145497280 is an equidigital number, since it uses as much as digits as its factorization.

145497280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454696 (or 454686 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 145497280 is about 12062.2253336605. The cubic root of 145497280 is about 525.9586776658.

The spelling of 145497280 in words is "one hundred forty-five million, four hundred ninety-seven thousand, two hundred eighty".