229081978 has 32 divisors (see below), whose sum is σ = 366612480. Its totient is φ = 107128560.

The previous prime is 229081973. The next prime is 229081981. The reversal of 229081978 is 879180922.

229081978 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (229081973) 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, 736443 + ... + 736753.

It is an arithmetic number, because the mean of its divisors is an integer number (11456640).

Almost surely, 2^229081978 is an apocalyptic number.

229081978 is a deficient number, since it is larger than the sum of its proper divisors (137530502).

229081978 is a wasteful number, since it uses less digits than its factorization.

229081978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 229081978 is about 15135.4543374158. The cubic root of 229081978 is about 611.8763135209.

The spelling of 229081978 in words is "two hundred twenty-nine million, eighty-one thousand, nine hundred seventy-eight".