145630540 has 48 divisors (see below), whose sum is σ = 336742560. Its totient is φ = 52462080.

The previous prime is 145630523. The next prime is 145630543. The reversal of 145630540 is 45036541.

It is a junction number, because it is equal to n+sod(n) for n = 145630499 and 145630508.

It is not an unprimeable number, because it can be changed into a prime (145630543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20944 + ... + 27016.

It is an arithmetic number, because the mean of its divisors is an integer number (7015470).

Almost surely, 2^145630540 is an apocalyptic number.

145630540 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 145630540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168371280).

145630540 is an abundant number, since it is smaller than the sum of its proper divisors (191112020).

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

145630540 is a wasteful number, since it uses less digits than its factorization.

145630540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6202 (or 6200 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 145630540 is about 12067.7479257731. The cubic root of 145630540 is about 526.1192026968.

The spelling of 145630540 in words is "one hundred forty-five million, six hundred thirty thousand, five hundred forty".