145997910 has 64 divisors (see below), whose sum is σ = 401909760. Its totient is φ = 37674720.

The previous prime is 145997909. The next prime is 145997927. The reversal of 145997910 is 19799541.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 352 + ... + 17091.

It is an arithmetic number, because the mean of its divisors is an integer number (6279840).

Almost surely, 2^145997910 is an apocalyptic number.

145997910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145997910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200954880).

145997910 is an abundant number, since it is smaller than the sum of its proper divisors (255911850).

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

145997910 is a wasteful number, since it uses less digits than its factorization.

145997910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17490 (or 17484 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The square root of 145997910 is about 12082.9594884697. The cubic root of 145997910 is about 526.5612302065.

The spelling of 145997910 in words is "one hundred forty-five million, nine hundred ninety-seven thousand, nine hundred ten".