228061507 has 8 divisors (see below), whose sum is σ = 231469056. Its totient is φ = 224669832.

The previous prime is 228061499. The next prime is 228061523. The reversal of 228061507 is 705160822.

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

It is a cyclic number.

It is not a de Polignac number, because 228061507 - 2³ = 228061499 is a prime.

It is a super-2 number, since 2×228061507² = 104024101950222098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228061577) 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, 26718 + ... + 34204.

It is an arithmetic number, because the mean of its divisors is an integer number (28933632).

Almost surely, 2^228061507 is an apocalyptic number.

228061507 is a deficient number, since it is larger than the sum of its proper divisors (3407549).

228061507 is an equidigital number, since it uses as much as digits as its factorization.

228061507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7937.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 228061507 is about 15101.7054334933. The cubic root of 228061507 is about 610.9664041858.

The spelling of 228061507 in words is "two hundred twenty-eight million, sixty-one thousand, five hundred seven".