15672261 has 8 divisors (see below), whose sum is σ = 22796064. Its totient is φ = 9498320.

The previous prime is 15672233. The next prime is 15672299. The reversal of 15672261 is 16227651.

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 15672261 - 2⁹ = 15671749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15672221) 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, 237426 + ... + 237491.

It is an arithmetic number, because the mean of its divisors is an integer number (2849508).

Almost surely, 2^15672261 is an apocalyptic number.

15672261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15672261 is a deficient number, since it is larger than the sum of its proper divisors (7123803).

15672261 is a wasteful number, since it uses less digits than its factorization.

15672261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474931.

The product of its digits is 5040, while the sum is 30.

The square root of 15672261 is about 3958.8206577212. The cubic root of 15672261 is about 250.2518049586.

It can be divided in two parts, 1567 and 2261, that added together give a triangular number (3828 = T₈₇).

The spelling of 15672261 in words is "fifteen million, six hundred seventy-two thousand, two hundred sixty-one".