145490922 has 12 divisors (see below), whose sum is σ = 315230370. Its totient is φ = 48496968.

The previous prime is 145490869. The next prime is 145490929. The reversal of 145490922 is 229094541.

145490922 is a `hidden beast` number, since 145 + 490 + 9 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 107557641 + 37933281 = 10371^2 + 6159^2 .

It is not an unprimeable number, because it can be changed into a prime (145490929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4041397 + ... + 4041432.

Almost surely, 2^145490922 is an apocalyptic number.

145490922 is an abundant number, since it is smaller than the sum of its proper divisors (169739448).

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

145490922 is a wasteful number, since it uses less digits than its factorization.

145490922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8082837 (or 8082834 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 145490922 is about 12061.9617807387. The cubic root of 145490922 is about 525.9510163680.

The spelling of 145490922 in words is "one hundred forty-five million, four hundred ninety thousand, nine hundred twenty-two".