15420054 has 64 divisors (see below), whose sum is σ = 36469440. Its totient is φ = 4300800.

The previous prime is 15420049. The next prime is 15420061. The reversal of 15420054 is 45002451.

15420054 = T₇₆ + T₇₇ + ... + T₄₅₂.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15420054.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38254 + ... + 38654.

It is an arithmetic number, because the mean of its divisors is an integer number (569835).

Almost surely, 2^15420054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15420054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18234720).

15420054 is an abundant number, since it is smaller than the sum of its proper divisors (21049386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15420054 is a wasteful number, since it uses less digits than its factorization.

15420054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 15420054 is about 3926.8376589821. The cubic root of 15420054 is about 248.9021405424.

The spelling of 15420054 in words is "fifteen million, four hundred twenty thousand, fifty-four".