70228778 has 16 divisors (see below), whose sum is σ = 109329480. Its totient is φ = 33793536.

The previous prime is 70228771. The next prime is 70228793. The reversal of 70228778 is 87782207.

It can be written as a sum of positive squares in 4 ways, for example, as 48260809 + 21967969 = 6947^2 + 4687^2 .

It is not an unprimeable number, because it can be changed into a prime (70228771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17750 + ... + 21342.

Almost surely, 2^70228778 is an apocalyptic number.

70228778 is a deficient number, since it is larger than the sum of its proper divisors (39100702).

70228778 is a wasteful number, since it uses less digits than its factorization.

70228778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3961.

The product of its (nonzero) digits is 87808, while the sum is 41.

The square root of 70228778 is about 8380.2612131126. The cubic root of 70228778 is about 412.5770224096.

The spelling of 70228778 in words is "seventy million, two hundred twenty-eight thousand, seven hundred seventy-eight".