145581428 has 12 divisors (see below), whose sum is σ = 254940672. Its totient is φ = 72741240.

The previous prime is 145581427. The next prime is 145581431. The reversal of 145581428 is 824185541.

145581428 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 145581391 and 145581400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145581427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5300 + ... + 17867.

It is an arithmetic number, because the mean of its divisors is an integer number (21245056).

Almost surely, 2^145581428 is an apocalyptic number.

It is an amenable number.

145581428 is a deficient number, since it is larger than the sum of its proper divisors (109359244).

145581428 is a wasteful number, since it uses less digits than its factorization.

145581428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24742 (or 24740 counting only the distinct ones).

The product of its digits is 51200, while the sum is 38.

The square root of 145581428 is about 12065.7129089002. The cubic root of 145581428 is about 526.0600537678.

The spelling of 145581428 in words is "one hundred forty-five million, five hundred eighty-one thousand, four hundred twenty-eight".