145515740 has 24 divisors (see below), whose sum is σ = 311351040. Its totient is φ = 57107648.

The previous prime is 145515739. The next prime is 145515743. The reversal of 145515740 is 47515541.

145515740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 145515697 and 145515706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145515743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67580 + ... + 69699.

It is an arithmetic number, because the mean of its divisors is an integer number (12972960).

Almost surely, 2^145515740 is an apocalyptic number.

145515740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145515740 is an abundant number, since it is smaller than the sum of its proper divisors (165835300).

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

145515740 is a wasteful number, since it uses less digits than its factorization.

145515740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137341 (or 137339 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 145515740 is about 12062.9905081617. The cubic root of 145515740 is about 525.9809204335.

The spelling of 145515740 in words is "one hundred forty-five million, five hundred fifteen thousand, seven hundred forty".