145889502 has 16 divisors (see below), whose sum is σ = 318304512. Its totient is φ = 44208920.

The previous prime is 145889501. The next prime is 145889507. The reversal of 145889502 is 205988541.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145889501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1105158 + ... + 1105289.

It is an arithmetic number, because the mean of its divisors is an integer number (19894032).

Almost surely, 2^145889502 is an apocalyptic number.

145889502 is an abundant number, since it is smaller than the sum of its proper divisors (172415010).

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

145889502 is a wasteful number, since it uses less digits than its factorization.

145889502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210463.

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 145889502 is about 12078.4726683468. The cubic root of 145889502 is about 526.4308685586.

It can be divided in two parts, 14588 and 9502, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 145889502 in words is "one hundred forty-five million, eight hundred eighty-nine thousand, five hundred two".