145194580 has 48 divisors (see below), whose sum is σ = 322882560. Its totient is φ = 54691200.

The previous prime is 145194563. The next prime is 145194583. The reversal of 145194580 is 85491541.

It is a super-2 number, since 2×145194580² = 42162932122752800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145194583) 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, 67725 + ... + 69835.

It is an arithmetic number, because the mean of its divisors is an integer number (6726720).

Almost surely, 2^145194580 is an apocalyptic number.

145194580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145194580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161441280).

145194580 is an abundant number, since it is smaller than the sum of its proper divisors (177687980).

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

145194580 is a wasteful number, since it uses less digits than its factorization.

145194580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320 (or 2318 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 145194580 is about 12049.6713648132. The cubic root of 145194580 is about 525.5936806306.

It can be divided in two parts, 1451945 and 80, that added together give a square (1452025 = 1205²).

The spelling of 145194580 in words is "one hundred forty-five million, one hundred ninety-four thousand, five hundred eighty".