145273430 has 32 divisors (see below), whose sum is σ = 277313760. Its totient is φ = 54639360.

The previous prime is 145273423. The next prime is 145273439. The reversal of 145273430 is 34372541.

It is a happy number.

It is a super-2 number, since 2×145273430² = 42208738927929800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145273393 and 145273402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145273439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23240 + ... + 28820.

It is an arithmetic number, because the mean of its divisors is an integer number (8666055).

Almost surely, 2^145273430 is an apocalyptic number.

145273430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145273430 is a deficient number, since it is larger than the sum of its proper divisors (132040330).

145273430 is a wasteful number, since it uses less digits than its factorization.

145273430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5744.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 145273430 is about 12052.9427941893. The cubic root of 145273430 is about 525.6888071427.

The spelling of 145273430 in words is "one hundred forty-five million, two hundred seventy-three thousand, four hundred thirty".