145280715 has 32 divisors (see below), whose sum is σ = 238291200. Its totient is φ = 75557760.

The previous prime is 145280701. The next prime is 145280741. The reversal of 145280715 is 517082541.

145280715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145280715 - 2⁴ = 145280699 is a prime.

It is a super-2 number, since 2×145280715² = 42212972301822450, which contains 22 as substring.

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, 122425 + ... + 123605.

It is an arithmetic number, because the mean of its divisors is an integer number (7446600).

Almost surely, 2^145280715 is an apocalyptic number.

145280715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145280715 is a deficient number, since it is larger than the sum of its proper divisors (93010485).

145280715 is a wasteful number, since it uses less digits than its factorization.

145280715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 145280715 is about 12053.2449987545. The cubic root of 145280715 is about 525.6975942025.

The spelling of 145280715 in words is "one hundred forty-five million, two hundred eighty thousand, seven hundred fifteen".