145568820 has 48 divisors (see below), whose sum is σ = 409324608. Its totient is φ = 38653440.

The previous prime is 145568783. The next prime is 145568827. The reversal of 145568820 is 28865541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145568827) 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, 9427 + ... + 19493.

It is an arithmetic number, because the mean of its divisors is an integer number (8527596).

Almost surely, 2^145568820 is an apocalyptic number.

145568820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145568820 is an abundant number, since it is smaller than the sum of its proper divisors (263755788).

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

145568820 is a wasteful number, since it uses less digits than its factorization.

145568820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10320 (or 10318 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 145568820 is about 12065.1904253518. The cubic root of 145568820 is about 526.0448669483.

The spelling of 145568820 in words is "one hundred forty-five million, five hundred sixty-eight thousand, eight hundred twenty".