145273398 has 32 divisors (see below), whose sum is σ = 308310624. Its totient is φ = 45476352.

The previous prime is 145273397. The next prime is 145273423. The reversal of 145273398 is 893372541.

It is a super-2 number, since 2×145273398² = 42208720332932808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145273397) 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, 55536 + ... + 58092.

It is an arithmetic number, because the mean of its divisors is an integer number (9634707).

Almost surely, 2^145273398 is an apocalyptic number.

145273398 is an abundant number, since it is smaller than the sum of its proper divisors (163037226).

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

145273398 is a wasteful number, since it uses less digits than its factorization.

145273398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136.

The product of its digits is 181440, while the sum is 42.

The square root of 145273398 is about 12052.9414667126. The cubic root of 145273398 is about 525.6887685441.

The spelling of 145273398 in words is "one hundred forty-five million, two hundred seventy-three thousand, three hundred ninety-eight".