145256970 has 16 divisors (see below), whose sum is σ = 348616800. Its totient is φ = 38735184.

The previous prime is 145256873. The next prime is 145256981. The reversal of 145256970 is 79652541.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2420920 + ... + 2420979.

It is an arithmetic number, because the mean of its divisors is an integer number (21788550).

Almost surely, 2^145256970 is an apocalyptic number.

145256970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145256970 is an abundant number, since it is smaller than the sum of its proper divisors (203359830).

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

145256970 is a wasteful number, since it uses less digits than its factorization.

145256970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4841909.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 145256970 is about 12052.2599540501. The cubic root of 145256970 is about 525.6689522512.

The spelling of 145256970 in words is "one hundred forty-five million, two hundred fifty-six thousand, nine hundred seventy".