28624777490 has 8 divisors (see below), whose sum is σ = 51524599500. Its totient is φ = 11449910992.

The previous prime is 28624777487. The next prime is 28624777501. The reversal of 28624777490 is 9477742682.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28474200049 + 150577441 = 168743^2 + 12271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1431238865 + ... + 1431238884.

Almost surely, 2^28624777490 is an apocalyptic number.

28624777490 is a deficient number, since it is larger than the sum of its proper divisors (22899822010).

28624777490 is a wasteful number, since it uses less digits than its factorization.

28624777490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862477756.

The product of its (nonzero) digits is 9483264, while the sum is 56.

The spelling of 28624777490 in words is "twenty-eight billion, six hundred twenty-four million, seven hundred seventy-seven thousand, four hundred ninety".