178049340 has 180 divisors, whose sum is σ = 650028456. Its totient is φ = 40678848.

The previous prime is 178049329. The next prime is 178049387. The reversal of 178049340 is 43940871.

It is a happy number.

178049340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (180).

It is a super-3 number, since 3×178049340³ (a number of 26 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 178049295 and 178049304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 78259 + ... + 80501.

Almost surely, 2^178049340 is an apocalyptic number.

178049340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 178049340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325014228).

178049340 is an abundant number, since it is smaller than the sum of its proper divisors (471979116).

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

178049340 is a wasteful number, since it uses less digits than its factorization.

178049340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278 (or 2260 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 178049340 is about 13343.5130306827. The cubic root of 178049340 is about 562.5746034384.

The spelling of 178049340 in words is "one hundred seventy-eight million, forty-nine thousand, three hundred forty".