258433380 has 36 divisors (see below), whose sum is σ = 783915132. Its totient is φ = 68915520.

The previous prime is 258433363. The next prime is 258433381. The reversal of 258433380 is 83334852.

It can be written as a sum of positive squares in 2 ways, for example, as 50381604 + 208051776 = 7098^2 + 14424^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (258433381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 717691 + ... + 718050.

Almost surely, 2^258433380 is an apocalyptic number.

258433380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258433380 is an abundant number, since it is smaller than the sum of its proper divisors (525481752).

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

258433380 is a wasteful number, since it uses less digits than its factorization.

258433380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435756 (or 1435751 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 258433380 is about 16075.8632738650. The cubic root of 258433380 is about 636.9659287112.

The spelling of 258433380 in words is "two hundred fifty-eight million, four hundred thirty-three thousand, three hundred eighty".