145621208 has 8 divisors (see below), whose sum is σ = 273039780. Its totient is φ = 72810600.

The previous prime is 145621183. The next prime is 145621237. The reversal of 145621208 is 802126541.

It is a tau number, because it is divible by the number of its divisors (8).

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, 9101318 + ... + 9101333.

Almost surely, 2^145621208 is an apocalyptic number.

It is an amenable number.

145621208 is a deficient number, since it is larger than the sum of its proper divisors (127418572).

145621208 is a wasteful number, since it uses less digits than its factorization.

145621208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18202657 (or 18202653 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 145621208 is about 12067.3612691425. The cubic root of 145621208 is about 526.1079645567.

Adding to 145621208 its reverse (802126541), we get a palindrome (947747749).

The spelling of 145621208 in words is "one hundred forty-five million, six hundred twenty-one thousand, two hundred eight".