145072970 has 32 divisors (see below), whose sum is σ = 305382528. Its totient is φ = 48581568.

The previous prime is 145072969. The next prime is 145072981. The reversal of 145072970 is 79270541.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 145072970.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21089 + ... + 27108.

It is an arithmetic number, because the mean of its divisors is an integer number (9543204).

Almost surely, 2^145072970 is an apocalyptic number.

145072970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145072970 is an abundant number, since it is smaller than the sum of its proper divisors (160309558).

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

145072970 is a wasteful number, since it uses less digits than its factorization.

145072970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48254.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 145072970 is about 12044.6241120261. The cubic root of 145072970 is about 525.4468998972.

The spelling of 145072970 in words is "one hundred forty-five million, seventy-two thousand, nine hundred seventy".