15420313 has 8 divisors (see below), whose sum is σ = 15612480. Its totient is φ = 15229680.

The previous prime is 15420287. The next prime is 15420329. The reversal of 15420313 is 31302451.

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 15420313 - 2⁹ = 15419801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15420413) 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, 49428 + ... + 49738.

It is an arithmetic number, because the mean of its divisors is an integer number (1951560).

Almost surely, 2^15420313 is an apocalyptic number.

It is an amenable number.

15420313 is a deficient number, since it is larger than the sum of its proper divisors (192167).

15420313 is a wasteful number, since it uses less digits than its factorization.

15420313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 15420313 is about 3926.8706370340. The cubic root of 15420313 is about 248.9035340804.

Adding to 15420313 its reverse (31302451), we get a palindrome (46722764).

The spelling of 15420313 in words is "fifteen million, four hundred twenty thousand, three hundred thirteen".