145435440 has 80 divisors (see below), whose sum is σ = 470469888. Its totient is φ = 37095168.

The previous prime is 145435439. The next prime is 145435453. The reversal of 145435440 is 44534541.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 145435398 and 145435407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7654 + ... + 18693.

Almost surely, 2^145435440 is an apocalyptic number.

145435440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145435440 is an abundant number, since it is smaller than the sum of its proper divisors (325034448).

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

145435440 is a wasteful number, since it uses less digits than its factorization.

145435440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26386 (or 26380 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 145435440 is about 12059.6616867970. The cubic root of 145435440 is about 525.8841518883.

Adding to 145435440 its reverse (44534541), we get a palindrome (189969981).

The spelling of 145435440 in words is "one hundred forty-five million, four hundred thirty-five thousand, four hundred forty".