145390988 has 6 divisors (see below), whose sum is σ = 254434236. Its totient is φ = 72695492.

The previous prime is 145390969. The next prime is 145391011. The reversal of 145390988 is 889093541.

145390988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145390988² = 42277078783232288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18173870 + ... + 18173877.

It is an arithmetic number, because the mean of its divisors is an integer number (42405706).

Almost surely, 2^145390988 is an apocalyptic number.

It is an amenable number.

145390988 is a deficient number, since it is larger than the sum of its proper divisors (109043248).

145390988 is a wasteful number, since it uses less digits than its factorization.

145390988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36347751 (or 36347749 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 145390988 is about 12057.8185423401. The cubic root of 145390988 is about 525.8305680108.

The spelling of 145390988 in words is "one hundred forty-five million, three hundred ninety thousand, nine hundred eighty-eight".