145388770 has 16 divisors (see below), whose sum is σ = 262209600. Its totient is φ = 58042224.

The previous prime is 145388731. The next prime is 145388821. The reversal of 145388770 is 77883541.

It is a super-2 number, since 2×145388770² = 42275788884225800, which contains 22 as substring.

It is an unprimeable number.

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, 8670 + ... + 19129.

It is an arithmetic number, because the mean of its divisors is an integer number (16388100).

Almost surely, 2^145388770 is an apocalyptic number.

145388770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145388770 is a deficient number, since it is larger than the sum of its proper divisors (116820830).

145388770 is a wasteful number, since it uses less digits than its factorization.

145388770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28329.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 145388770 is about 12057.7265684705. The cubic root of 145388770 is about 525.8278940759.

The spelling of 145388770 in words is "one hundred forty-five million, three hundred eighty-eight thousand, seven hundred seventy".