69778272 has 48 divisors (see below), whose sum is σ = 189084672. Its totient is φ = 22508160.

The previous prime is 69778271. The next prime is 69778273. The reversal of 69778272 is 27287796.

It is an interprime number because it is at equal distance from previous prime (69778271) and next prime (69778273).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69778271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8748 + ... + 14699.

It is an arithmetic number, because the mean of its divisors is an integer number (3939264).

Almost surely, 2^69778272 is an apocalyptic number.

69778272 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

69778272 is an abundant number, since it is smaller than the sum of its proper divisors (119306400).

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

69778272 is a wasteful number, since it uses less digits than its factorization.

69778272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23491 (or 23483 counting only the distinct ones).

The product of its digits is 592704, while the sum is 48.

The square root of 69778272 is about 8353.3389731292. The cubic root of 69778272 is about 411.6929247968.

The spelling of 69778272 in words is "sixty-nine million, seven hundred seventy-eight thousand, two hundred seventy-two".