88427421 has 12 divisors (see below), whose sum is σ = 135242172. Its totient is φ = 55483776.

The previous prime is 88427411. The next prime is 88427459. The reversal of 88427421 is 12472488.

It can be written as a sum of positive squares in 2 ways, for example, as 24651225 + 63776196 = 4965^2 + 7986^2 .

It is not a de Polignac number, because 88427421 - 2¹⁰ = 88426397 is a prime.

It is a super-2 number, since 2×88427421² = 15638817569422482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88427411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288826 + ... + 289131.

It is an arithmetic number, because the mean of its divisors is an integer number (11270181).

Almost surely, 2^88427421 is an apocalyptic number.

It is an amenable number.

88427421 is a deficient number, since it is larger than the sum of its proper divisors (46814751).

88427421 is a wasteful number, since it uses less digits than its factorization.

88427421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577980 (or 577977 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 88427421 is about 9403.5855395695. The cubic root of 88427421 is about 445.5149885180.

The spelling of 88427421 in words is "eighty-eight million, four hundred twenty-seven thousand, four hundred twenty-one".