145418520 has 192 divisors, whose sum is σ = 490462560. Its totient is φ = 34283520.

The previous prime is 145418519. The next prime is 145418521. The reversal of 145418520 is 25814541.

It is an interprime number because it is at equal distance from previous prime (145418519) and next prime (145418521).

It is a super-2 number, since 2×145418520² = 42293091917980800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145418521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1499112 + ... + 1499208.

Almost surely, 2^145418520 is an apocalyptic number.

145418520 is a gapful number since it is divisible by the number (10) 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 145418520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245231280).

145418520 is an abundant number, since it is smaller than the sum of its proper divisors (345044040).

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

145418520 is a wasteful number, since it uses less digits than its factorization.

145418520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 145418520 is about 12058.9601541758. The cubic root of 145418520 is about 525.8637572607.

The spelling of 145418520 in words is "one hundred forty-five million, four hundred eighteen thousand, five hundred twenty".