1227872964 has 24 divisors (see below), whose sum is σ = 2877664608. Its totient is φ = 407487040.
The previous prime is 1227872951. The next prime is 1227872977. The reversal of 1227872964 is 4692787221.
1227872964 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (1227872951) and next prime (1227872977).
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222657 + ... + 228104.
It is an arithmetic number, because the mean of its divisors is an integer number (119902692).
Almost surely, 21227872964 is an apocalyptic number.
It is an amenable number.
1227872964 is an abundant number, since it is smaller than the sum of its proper divisors (1649791644).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1227872964 is a wasteful number, since it uses less digits than its factorization.
1227872964 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 450995 (or 450993 counting only the distinct ones).
The product of its digits is 677376, while the sum is 48.
The square root of 1227872964 is about 35041.0183071212. The cubic root of 1227872964 is about 1070.8232997443.
It can be divided in two parts, 122787 and 2964, that added together give a triangular number (125751 = T501).
The spelling of 1227872964 in words is "one billion, two hundred twenty-seven million, eight hundred seventy-two thousand, nine hundred sixty-four".
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