145378240 has 56 divisors (see below), whose sum is σ = 395642592. Its totient is φ = 49843200.

The previous prime is 145378231. The next prime is 145378241. The reversal of 145378240 is 42873541.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×145378240² = 42269665330995200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 145378196 and 145378205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145378241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30211 + ... + 34690.

Almost surely, 2^145378240 is an apocalyptic number.

145378240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145378240 is an abundant number, since it is smaller than the sum of its proper divisors (250264352).

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

145378240 is an equidigital number, since it uses as much as digits as its factorization.

145378240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64925 (or 64915 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 145378240 is about 12057.2899110870. The cubic root of 145378240 is about 525.8151991445.

The spelling of 145378240 in words is "one hundred forty-five million, three hundred seventy-eight thousand, two hundred forty".