145719490 has 64 divisors (see below), whose sum is σ = 323688960. Its totient is φ = 46126080.

The previous prime is 145719487. The next prime is 145719491. The reversal of 145719490 is 94917541.

It is not an unprimeable number, because it can be changed into a prime (145719491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45130 + ... + 48250.

It is an arithmetic number, because the mean of its divisors is an integer number (5057640).

Almost surely, 2^145719490 is an apocalyptic number.

145719490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145719490 is an abundant number, since it is smaller than the sum of its proper divisors (177969470).

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

145719490 is a wasteful number, since it uses less digits than its factorization.

145719490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3187.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 145719490 is about 12071.4328064236. The cubic root of 145719490 is about 526.2262973999.

The spelling of 145719490 in words is "one hundred forty-five million, seven hundred nineteen thousand, four hundred ninety".