145481470 has 32 divisors (see below), whose sum is σ = 269498592. Its totient is φ = 56512512.

The previous prime is 145481437. The next prime is 145481471. The reversal of 145481470 is 74184541.

It is a happy number.

It is a super-2 number, since 2×145481470² = 42329716226721800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145481471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82114 + ... + 83866.

It is an arithmetic number, because the mean of its divisors is an integer number (8421831).

Almost surely, 2^145481470 is an apocalyptic number.

145481470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145481470 is a deficient number, since it is larger than the sum of its proper divisors (124017122).

145481470 is a wasteful number, since it uses less digits than its factorization.

145481470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 145481470 is about 12061.5699641465. The cubic root of 145481470 is about 525.9396264324.

The spelling of 145481470 in words is "one hundred forty-five million, four hundred eighty-one thousand, four hundred seventy".