145943730 has 24 divisors (see below), whose sum is σ = 379453932. Its totient is φ = 38918304.

The previous prime is 145943719. The next prime is 145943737. The reversal of 145943730 is 37349541.

145943730 is a `hidden beast` number, since 1 + 4 + 594 + 37 + 30 = 666.

145943730 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 2 ways, for example, as 137804121 + 8139609 = 11739^2 + 2853^2 .

It is not an unprimeable number, because it can be changed into a prime (145943737) 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, 810709 + ... + 810888.

Almost surely, 2^145943730 is an apocalyptic number.

145943730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145943730 is an abundant number, since it is smaller than the sum of its proper divisors (233510202).

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

145943730 is a wasteful number, since it uses less digits than its factorization.

145943730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621610 (or 1621607 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 145943730 is about 12080.7172800294. The cubic root of 145943730 is about 526.4960863122.

The spelling of 145943730 in words is "one hundred forty-five million, nine hundred forty-three thousand, seven hundred thirty".