145584690 has 32 divisors (see below), whose sum is σ = 351435456. Its totient is φ = 38596800.

The previous prime is 145584671. The next prime is 145584721. The reversal of 145584690 is 96485541.

It is a super-2 number, since 2×145584690² = 42389803924792200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8836 + ... + 19215.

It is an arithmetic number, because the mean of its divisors is an integer number (10982358).

Almost surely, 2^145584690 is an apocalyptic number.

145584690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145584690 is an abundant number, since it is smaller than the sum of its proper divisors (205850766).

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

145584690 is a wasteful number, since it uses less digits than its factorization.

145584690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28234.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 145584690 is about 12065.8480845733. The cubic root of 145584690 is about 526.0639828292.

The spelling of 145584690 in words is "one hundred forty-five million, five hundred eighty-four thousand, six hundred ninety".