145471932 has 18 divisors (see below), whose sum is σ = 367720808. Its totient is φ = 48490632.

The previous prime is 145471889. The next prime is 145471939. The reversal of 145471932 is 239174541.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4040887 = 145471932 / (1 + 4 + 5 + 4 + 7 + 1 + 9 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145471939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2020408 + ... + 2020479.

Almost surely, 2^145471932 is an apocalyptic number.

145471932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145471932 is an abundant number, since it is smaller than the sum of its proper divisors (222248876).

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

145471932 is a wasteful number, since it uses less digits than its factorization.

145471932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040897 (or 4040892 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 145471932 is about 12061.1745696677. The cubic root of 145471932 is about 525.9281323643.

The spelling of 145471932 in words is "one hundred forty-five million, four hundred seventy-one thousand, nine hundred thirty-two".