145494730 has 32 divisors (see below), whose sum is σ = 270642384. Its totient is φ = 56272896.

The previous prime is 145494719. The next prime is 145494737. The reversal of 145494730 is 37494541.

145494730 = T₉₁ + T₉₂ + ... + T₉₅₅.

It can be written as a sum of positive squares in 8 ways, for example, as 141586201 + 3908529 = 11899^2 + 1977^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 145494730.

It is not an unprimeable number, because it can be changed into a prime (145494737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62874 + ... + 65146.

Almost surely, 2^145494730 is an apocalyptic number.

145494730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145494730 is a deficient number, since it is larger than the sum of its proper divisors (125147654).

145494730 is a wasteful number, since it uses less digits than its factorization.

145494730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 145494730 is about 12062.1196313086. The cubic root of 145494730 is about 525.9556049796.

The spelling of 145494730 in words is "one hundred forty-five million, four hundred ninety-four thousand, seven hundred thirty".