145346994 has 64 divisors (see below), whose sum is σ = 349937280. Its totient is φ = 44452800.

The previous prime is 145346933. The next prime is 145347029. The reversal of 145346994 is 499643541.

It is a super-2 number, since 2×145346994² = 42251497329672072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137769 + ... + 138819.

It is an arithmetic number, because the mean of its divisors is an integer number (5467770).

Almost surely, 2^145346994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145346994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174968640).

145346994 is an abundant number, since it is smaller than the sum of its proper divisors (204590286).

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

145346994 is a wasteful number, since it uses less digits than its factorization.

145346994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1266 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 145346994 is about 12055.9941108148. The cubic root of 145346994 is about 525.7775254666. Note that the first 3 decimals are identical.

It can be divided in two parts, 14534 and 6994, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 145346994 in words is "one hundred forty-five million, three hundred forty-six thousand, nine hundred ninety-four".