145562020 has 24 divisors (see below), whose sum is σ = 316222200. Its totient is φ = 56216832.

The previous prime is 145561993. The next prime is 145562029. The reversal of 145562020 is 20265541.

It can be written as a sum of positive squares in 4 ways, for example, as 2137444 + 143424576 = 1462^2 + 11976^2 .

It is not an unprimeable number, because it can be changed into a prime (145562029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124905 + ... + 126064.

It is an arithmetic number, because the mean of its divisors is an integer number (13175925).

Almost surely, 2^145562020 is an apocalyptic number.

145562020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145562020 is an abundant number, since it is smaller than the sum of its proper divisors (170660180).

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

145562020 is a wasteful number, since it uses less digits than its factorization.

145562020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251007 (or 251005 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 145562020 is about 12064.9086196291. The cubic root of 145562020 is about 526.0366757234.

The spelling of 145562020 in words is "one hundred forty-five million, five hundred sixty-two thousand, twenty".