145402338 has 16 divisors (see below), whose sum is σ = 300185856. Its totient is φ = 46903920.

The previous prime is 145402337. The next prime is 145402399. The reversal of 145402338 is 833204541.

It is a super-2 number, since 2×145402338² = 42283679791732488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145402331) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 390681 + ... + 391052.

It is an arithmetic number, because the mean of its divisors is an integer number (18761616).

Almost surely, 2^145402338 is an apocalyptic number.

145402338 is an abundant number, since it is smaller than the sum of its proper divisors (154783518).

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

145402338 is a wasteful number, since it uses less digits than its factorization.

145402338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781769.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 145402338 is about 12058.2891821353. The cubic root of 145402338 is about 525.8442507059.

Adding to 145402338 its reverse (833204541), we get a palindrome (978606879).

The spelling of 145402338 in words is "one hundred forty-five million, four hundred two thousand, three hundred thirty-eight".