145603400 has 24 divisors (see below), whose sum is σ = 338528370. Its totient is φ = 58241280.

The previous prime is 145603397. The next prime is 145603457. The reversal of 145603400 is 4306541.

It is a happy number.

145603400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 131928196 + 13675204 = 11486^2 + 3698^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 363809 + ... + 364208.

Almost surely, 2^145603400 is an apocalyptic number.

145603400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145603400 is an abundant number, since it is smaller than the sum of its proper divisors (192924970).

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

145603400 is a wasteful number, since it uses less digits than its factorization.

145603400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728033 (or 728024 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 145603400 is about 12066.6233885043. The cubic root of 145603400 is about 526.0865177892.

Adding to 145603400 its reverse (4306541), we get a palindrome (149909941).

The spelling of 145603400 in words is "one hundred forty-five million, six hundred three thousand, four hundred".