145400000 has 84 divisors (see below), whose sum is σ = 361133136. Its totient is φ = 58080000.

The previous prime is 145399979. The next prime is 145400009. The reversal of 145400000 is 4541.

It is a super-2 number, since 2×145400000² = 42282320000000000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145400009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199637 + ... + 200363.

It is an arithmetic number, because the mean of its divisors is an integer number (4299204).

Almost surely, 2^145400000 is an apocalyptic number.

145400000 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 145400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180566568).

145400000 is an abundant number, since it is smaller than the sum of its proper divisors (215733136).

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

145400000 is an frugal number, since it uses more digits than its factorization.

145400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 145400000 is about 12058.1922359863. The cubic root of 145400000 is about 525.8414322495.

Adding to 145400000 its reverse (4541), we get a palindrome (145404541).

The spelling of 145400000 in words is "one hundred forty-five million, four hundred thousand".