145970640 has 80 divisors (see below), whose sum is σ = 502795200. Its totient is φ = 38924928.

The previous prime is 145970633. The next prime is 145970641. The reversal of 145970640 is 46079541.

145970640 is a `hidden beast` number, since 1 + 4 + 5 + 9 + 7 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 145970595 and 145970604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145970641) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 31630 + ... + 35949.

It is an arithmetic number, because the mean of its divisors is an integer number (6284940).

Almost surely, 2^145970640 is an apocalyptic number.

145970640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145970640 is an abundant number, since it is smaller than the sum of its proper divisors (356824560).

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

145970640 is a wasteful number, since it uses less digits than its factorization.

145970640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67601 (or 67589 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 145970640 is about 12081.8309870648. The cubic root of 145970640 is about 526.5284438493.

The spelling of 145970640 in words is "one hundred forty-five million, nine hundred seventy thousand, six hundred forty".