145272810 has 16 divisors (see below), whose sum is σ = 348654816. Its totient is φ = 38739408.

The previous prime is 145272779. The next prime is 145272811. The reversal of 145272810 is 18272541.

It is a super-2 number, since 2×145272810² = 42208378650592200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4842427 = 145272810 / (1 + 4 + 5 + 2 + 7 + 2 + 8 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (145272811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2421184 + ... + 2421243.

It is an arithmetic number, because the mean of its divisors is an integer number (21790926).

Almost surely, 2^145272810 is an apocalyptic number.

145272810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145272810 is an abundant number, since it is smaller than the sum of its proper divisors (203382006).

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

145272810 is a wasteful number, since it uses less digits than its factorization.

145272810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842437.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 145272810 is about 12052.9170743020. The cubic root of 145272810 is about 525.6880592943.

The spelling of 145272810 in words is "one hundred forty-five million, two hundred seventy-two thousand, eight hundred ten".