354147978 has 32 divisors (see below), whose sum is σ = 751130496. Its totient is φ = 110931968.

The previous prime is 354147977. The next prime is 354147991. The reversal of 354147978 is 879741453.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (354147977) 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, 73450 + ... + 78122.

It is an arithmetic number, because the mean of its divisors is an integer number (23472828).

Almost surely, 2^354147978 is an apocalyptic number.

354147978 is an abundant number, since it is smaller than the sum of its proper divisors (396982518).

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

354147978 is a wasteful number, since it uses less digits than its factorization.

354147978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5438.

The product of its digits is 846720, while the sum is 48.

The square root of 354147978 is about 18818.8197823349. The cubic root of 354147978 is about 707.5029507883.

The spelling of 354147978 in words is "three hundred fifty-four million, one hundred forty-seven thousand, nine hundred seventy-eight".