145229970 has 32 divisors (see below), whose sum is σ = 360573120. Its totient is φ = 37392320.

The previous prime is 145229969. The next prime is 145229971. The reversal of 145229970 is 79922541.

It is an interprime number because it is at equal distance from previous prime (145229969) and next prime (145229971).

It is not an unprimeable number, because it can be changed into a prime (145229971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82596 + ... + 84335.

It is an arithmetic number, because the mean of its divisors is an integer number (11267910).

Almost surely, 2^145229970 is an apocalyptic number.

145229970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145229970 is an abundant number, since it is smaller than the sum of its proper divisors (215343150).

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

145229970 is a wasteful number, since it uses less digits than its factorization.

145229970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166970.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 145229970 is about 12051.1397801204. The cubic root of 145229970 is about 525.6363802257.

The spelling of 145229970 in words is "one hundred forty-five million, two hundred twenty-nine thousand, nine hundred seventy".