145649364 has 72 divisors (see below), whose sum is σ = 416172960. Its totient is φ = 39420864.

The previous prime is 145649351. The next prime is 145649393. The reversal of 145649364 is 463946541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4654 + ... + 17690.

It is an arithmetic number, because the mean of its divisors is an integer number (5780180).

Almost surely, 2^145649364 is an apocalyptic number.

145649364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145649364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208086480).

145649364 is an abundant number, since it is smaller than the sum of its proper divisors (270523596).

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

145649364 is a wasteful number, since it uses less digits than its factorization.

145649364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13077 (or 13068 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 145649364 is about 12068.5278306842. The cubic root of 145649364 is about 526.1418701977.

The spelling of 145649364 in words is "one hundred forty-five million, six hundred forty-nine thousand, three hundred sixty-four".