145539988 has 12 divisors (see below), whose sum is σ = 277849152. Its totient is φ = 66154520.

The previous prime is 145539973. The next prime is 145539997. The reversal of 145539988 is 889935541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653820 + ... + 1653907.

It is an arithmetic number, because the mean of its divisors is an integer number (23154096).

Almost surely, 2^145539988 is an apocalyptic number.

It is an amenable number.

145539988 is a deficient number, since it is larger than the sum of its proper divisors (132309164).

145539988 is a wasteful number, since it uses less digits than its factorization.

145539988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307742 (or 3307740 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 52.

The square root of 145539988 is about 12063.9955238718. The cubic root of 145539988 is about 526.0101344026.

The spelling of 145539988 in words is "one hundred forty-five million, five hundred thirty-nine thousand, nine hundred eighty-eight".