145890622 has 4 divisors (see below), whose sum is σ = 218835936. Its totient is φ = 72945310.

The previous prime is 145890611. The next prime is 145890631. The reversal of 145890622 is 226098541.

145890622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36472654 + ... + 36472657.

It is an arithmetic number, because the mean of its divisors is an integer number (54708984).

Almost surely, 2^145890622 is an apocalyptic number.

145890622 is a deficient number, since it is larger than the sum of its proper divisors (72945314).

145890622 is an equidigital number, since it uses as much as digits as its factorization.

145890622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72945313.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 145890622 is about 12078.5190317356. The cubic root of 145890622 is about 526.4322156993.

The spelling of 145890622 in words is "one hundred forty-five million, eight hundred ninety thousand, six hundred twenty-two".