145868456 has 8 divisors (see below), whose sum is σ = 273503370. Its totient is φ = 72934224.

The previous prime is 145868417. The next prime is 145868509. The reversal of 145868456 is 654868541.

It can be written as a sum of positive squares in only one way, i.e., 130736356 + 15132100 = 11434^2 + 3890^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 145868456.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9116771 + ... + 9116786.

Almost surely, 2^145868456 is an apocalyptic number.

It is an amenable number.

145868456 is a deficient number, since it is larger than the sum of its proper divisors (127634914).

145868456 is a wasteful number, since it uses less digits than its factorization.

145868456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18233563 (or 18233559 counting only the distinct ones).

The product of its digits is 921600, while the sum is 47.

The square root of 145868456 is about 12077.6014175001. The cubic root of 145868456 is about 526.4055530590.

The spelling of 145868456 in words is "one hundred forty-five million, eight hundred sixty-eight thousand, four hundred fifty-six".