145888490 has 24 divisors (see below), whose sum is σ = 288644580. Its totient is φ = 53049920.

The previous prime is 145888487. The next prime is 145888513. The reversal of 145888490 is 94888541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 130119649 + 15768841 = 11407^2 + 3971^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59075 + ... + 61494.

Almost surely, 2^145888490 is an apocalyptic number.

145888490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145888490 is a deficient number, since it is larger than the sum of its proper divisors (142756090).

145888490 is a wasteful number, since it uses less digits than its factorization.

145888490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120598 (or 120587 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 47.

The square root of 145888490 is about 12078.4307755602. The cubic root of 145888490 is about 526.4296513148.

The spelling of 145888490 in words is "one hundred forty-five million, eight hundred eighty-eight thousand, four hundred ninety".